Re: Boat Adjustment
I've always adjusted so the transom is supported on the end of the trailer.
Then move the post to where ever it needs to be.
After that go for 7 to 10 percent of the total weight on the tongue. That can be done by moving the axel or by adjusting the contents for travel on the trailer.
I also adjust the bunks / rollers as low as I can get away with.
For level, I'll measure the frame inside the wheels (loaded) for heigth,,, then make the hitch to adjust the tongue to the same measurement or just a tad higher.
I've had good results with the above method for years and years.