Bouncing in the boat....

[riverrat56]

I run an 89' Lund Rebel with a 40 hp Evinrude, tiller, with two people in the boat, it rides great, tops out at around 27-29 depending on the load in the boat. I however often fish alone...

And when I am alone in the boat, it bounces very badly once I am up on plane, even if I do not go WOT it still does it within a few hundered yards on plane. The only way to get it to stop is to slow way back down and get off plane, only to have it start again. With a person upfront it is fine, so I know that weight distrubution would fix it, but I have nothing else to move. The deep cycle battery is in the very front of the boat, as are 2 anchors and my tackle box.

Really a pain in the arse when making a long run all alone, what can I do to fix this? Differnt prop? Hydrofoil?

Thanks guys

[Eskimoman]

I have the same problem with my 16ft lund and 40 hp merc. I was thinking of buying a sandbag to put up in the front for when I go out myself. With 2 people it is fine.

[boatfixer]

Does this have trim and tilt? if so are you may be trimming out to far.

If it does not have trim and tilt, which holes do you have the tilt pin set in? You may have to set it in further.

[Surface Tension]

Your porpoising. Do as boatfixer suggested.

[riverrat56]

No trim and tilt, I will try what you said...leaving for the lake right now...hopefully it helps.

[Griggs]

My 16' Polar Kraft with 50hp does the same thing if I trim up too much. I just need to lower down a bit when it starts doing that and then its fine.

[Wish-I-Were-Fishn]

You can also add a stabilizer fin. That would help a lot.

[Tom7227]

Try moving the battery and gas can forward a bit. Why haul around a lot of sand if you don't need it. Or, find a kid and take her along.

[limit]

I had the same problem with my lund rebel. I adjusted the trim and it made a big difference.

[Minnesota Fats]

drop it to a lower trim pin

[riverrat56]

There are three holes on the bottom bracket of the motor are these the trim pins? They have a bolt through them. If so it is already in the lowest of them (closest to boat as well). The motor does move, it has power assist trim which basically means it tilts up and down manually after I flip a lever, I always keep it all the way down, but have tried moving it slightly up, nothing changes.

[boatfixer]

Sounds like it is all the way down then. It would be the pin that the motor would stop at in the down position. It just may very well be a weight distribution problem. Also, is the anti-cavitation plate level with the bottom of the boat? and is the bottom of the boat flat (stern to bow) at the back of the boat? A "rocker" in the hull can cause this to.

[riverrat56]

I'll go look as soon as you tell me what the anti-cavitation plate is. It's flat in the back.

[boatfixer]

The flat horizontal plate just above the prop.

[riverrat56]

Ahhh....thats what I thought, thanks for the help.

It is a tad lower than the boat if I remeber right, but the garage is like 40' away, and I have to go to work at 5 tomorrow and I had to much fun last night so I'll look forsure tomorrow.

How would this be adjusted other than moving the motor up?

[eurolarva]

You might not be able to without an adapter. Could be a long shaft motor on a short shaft transom.

[boatfixer]

You would have to raise the motor.