Get u a whale tale for your motor.My buddy has a 90 hp yamaha and his boat was doing it bad but problem solved now.

 

He's referring to my boat, I put a $53 stingray whale tale on it which is a 90hp Yamaha and didn't move any weight. Bolted it on without having to drill any holes and 5 minutes later, no porposing.

 

Put tabs on the pods or move some weight back up front

 

x2 for the whale tail if it will fit.

 

i put a strip of alum plate across from one flot pod to the other helped the problem some only left enough room motor wouldnt hit when tilted all way down had a half moon cut out in plate for motor.also jacked motor up as far as possible also helped.

 

Whale tail and readjust the weight in the boat.

 

whale tail and test other prop pitches

 

x2 ^^^

 

Our 2072 with pods will do it if the motor is trimmed too high. It only started doing it though when we switched from a 15p to a 19p prop.

 

Thanks guys. Readjusting weight isnt an option. Ive got a whale tail coming and it already has a jack plate. Guess i will wait and see if the tail helps but ive got a sneaky feeling is not going to. May just have to fad up some heavy duty trim tabs weather i want to or not. I know they will solvebthe issue but they are also gonna kill my speed if they aint adjustable while on the move. How would reproping help? Just curious. Havent heard that one before. Might be another option before i try tabs..

 

when mine does, i just trim down till it stops usually within 8 seconds and trim back up, doesnt happen much, gotta control it

 

X 2

 

I fixed mine by moving more weight up front. - two deep cycle batteries.

 

My tail.will be here tuesday. We'll see ifnthat helps any. If not then im just gonna weld so.e tabs onnthe pods and if it slows me down to much it will just be a good reason to sellnthe 90 and buy a bigger motor. Anyone intereated in a 2006 yamaha 90hp?

 

It's weight, u have a lightweight boat. Readjust and skip all the expensive b.s. I've tried everything u can possibly imagine on many boats. Motors, gutting interiors etc...... You're weight is wrong.

 

Yeah i know because of all the weight in the back. Thats why im trying to figure out how to fix it without moving anything back up front. Ill buy whatever it takes to fix but im not moving the batteries back up front.

 

Whale tale should get you right. I have an 85 hp on my 17 foot flat bottom and it is a night and day difference with the whale tale.

 

Just get a couple fat girls and make them ride on the platform lol.

 

Depends on how "bad" the porposing is. I couldn't trim my motor any where near where it needed to be, and a whale tail didn't even touch my problem. You may be surprised at how little of a trim tab you can get away with. I eneded up welding some aluminum angle to the bottom of my hull. 1/2 rise over 3" run welded between the ribs. I didn't want a steep angle so it wouldn't get hung up on stumps and things. Good luck.

 

Depends on how "bad" the porposing is. I couldn't trim my motor any where near where it needed to be, and a whale tail didn't even touch my problem. You may be surprised at how little of a trim tab you can get away with.

yep

 

The prop can make a huge difference. I run a 1756 FB Xpress. 5 Batteries, 12 gal gas, and myself in back. Ive played with a few pitches and for some reason the higher pitch I went the more it porposed. You could try a cheap prop or they do have props designed to left the stern a little. I know for my boat with an E-tec they have a rogue 4 blade that is designed for stern heavy boats. Im sure Yamaha has something similar.....Or just weld the tabs on and call it a day haha

 

LMAO!!!! I got the hydrofoil in yesterday and im takinthe boat out this morning when i get off work. Ill let you know if it was a waste of money ot not. One good thing is i have a 6" jack plate so i can play with the motor height also and see ifbthat helps any.

 

Sounds like a pure prop problem to me

 

Hey brah u can screw around with the weight distribution get some concrete bags on your deck but it sounds more like a prop mine purposed til I got the right prop

 

trim tabs and whale tails are not what you need, you need some good size float pods, took it right outta my old boat

 

Ok the whale tail/ hydrofoil was a waste. Imagine that! LOL!! I really dont wanna have to move any weight back up front. How big of tabs would you guys recomend having welded on my pods? Here is a picture of my boat with the pods on it now. They measure 24x24x 10.

 

Why do you need float pods?

 

when you are running full power and boat trimmed the best you can get it to do is there any water spray shooting up around the foot of engine and almost coming over into rear of boat i had this problem with mine i had floot pods as well as 12 inch toons extended another 18 inches past floot pods took 1/8 piece of flat alum plate connected it to boat and each floot pod back toward foot of engine as far as i could and not contact the foot when trimmed all way down actually i had a half moon piece trimmed out of this piece to get it as far back as possible around foot. this pretty well cured the problem. you might want to observe whats happening first around the foot and rear of boat first.

 

You nailed it EXACTLY! If i trim down to where it needs to be to stop, its throwing water up over the back of the boat BAD! I built a splash plate also for mine to deal with that. It almost acts like the motor shaft is to long but i have a jack plate and have tried moving it up and down 4 to 5 inches both ways and it doesnt seem to help at all but its way better higher up but also wants to cavitate easier. Maby this is just an F&F thing. I have never had this issue with any of my other boats.Im just gonna have some tabs put on the pods and hopefully be done with this.

 

Like I said buddy I have access to an aluminum spool gun. If you can weld it we can sure get it done. Just let me know. Have fun in texas!

 

sounds similar to what mine was doing if tabs don,t cure it all the way fill in between the float pods.

 

sounds like you need to unbolt that engine and line the cavitation plate up with the bottom of the boat at transom, ive had all of the problems that you have, and i have about the same things, 16 gallons gas, 4 g29 batts, a 3500 watt genny, 250 pound engine, and three people in back with pods, used to spray and porpose,,, i raised my engine and went with a lower pitch prop and it solved everything, better hole shot, im runnin my 6000 rpms, and itll porpoe not very often at all if any anymore, i work the trim if it does, since you have the jack plate it should be easier for you to move the engine

 

I just raised the motor back to 1/2" high off the bottom ofnthe boat but havent got to take it back out yet. Im gonna take it out today and ifnthat didnt help any its gettingbtabs put on monday. Im running a 13 pitch power tech pusher prop now and i cant givenit full throttle qithout over reving so that could be part of the issue. I know i need a 15 or 17 pitch prop for sure. I just didnt think that would causenthe problems im having but maby it is. At 3/4 throttle im running 5900rpms. If i hammer it down it will jump to 6400rpms easy which is BAD!!