Lower the bunks so the boat sits lower on the trailer. Smaller tires on the trailer. Extend trailer tongue. Bigger tires on your truck.
Haha lots of things may help. Without pics of your setup some options may be better than others but as mentioned, extending the trailer tongue may be best.
The best way is probably a spark tester (it will show you how good of a spark). As a quick check I use a timing light which clips on the plug wire and flashes each time that cylinder fires. When you change the plugs you should be able to tell if a plug isn't getting juice or other issue by how...
I'm not familiar with landau boats but assuming it has lifting strakes on the bottom. Are they all hooked or just the outer ones? Are they hooked equally? Id try knocking out the hook to 1/16 and running it but depending on your boat setup you may not be able to access the strakes from the...
Genuinedealz is cheap and free shipping. Youll have to calculate you amp draw and cable length to determine the size cable. I believe they have a calculator on the website too.