New to me boat “hops” when trimmed

Deer Assassin

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Joined
Aug 1, 2003
Messages
105,491
Location
Kingston Springs
Whale tail will 100 percent fix it.
I like Stingray


I contacted them yesterday ... liked the product and price

only thing i dont like is drilling my 2021 merc

if i dont like it how would one fill the holes jb weld

when i put the 2021 motor on my 17 triton aluminum it sits lower and i dont get a "lot" of trim before it starts porpoising
 

WTM

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Oct 16, 2008
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10,969
Location
benton co.
looks like the motor is too low. id raise it up to the bottom hole and see if you get more trim angle. the only other way is to probably install a jackplate. adding a foil may make it worse if its sitting too low. dont know what type of hull design you have but flatbottoms folks usually have to install trim tabs.
 

XCR-2

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Joined
Oct 14, 2015
Messages
82
First take a straight edge , put it on the bottom of the boat and see where the cavitation plate is in relation to it. Most are even to 1” above the bottom of the boat. You can raise the motor up or down. If it’s too high it will usually porpoise but some boats are just prone to it If they are a lightweight hull.( rear end heavy) Add weight up front and see what happens.
This
 

Uncle Jesse

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Joined
Apr 4, 2011
Messages
753
Location
Estill Springs
I contacted them yesterday ... liked the product and price

only thing i dont like is drilling my 2021 merc

if i dont like it how would one fill the holes jb weld

when i put the 2021 motor on my 17 triton aluminum it sits lower and i dont get a "lot" of trim before it starts porpoising
I got the one that requires no drilling. Been on there for 6 years now with no problems

It's on a 2016 Mercury 4 stroke 2.1 115
 
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