I have two, and three respectively....
I guess my question is why does one need to back in that far. The Carver sits quite high on the trailer and even on shallow andle ramps I never even get my tires wet
There are many factors that determine how far you have to back into the water to launch/retrieve...Weight (can varies depending on how much stuff/kids my wife can cram into the boat), height of boat on trailer, length of boat, draft, angle of ramp, bunks vs. rollers, angle of trailer on hitch (I try to make it level, but on occasion someone else from our camping group will launch another's boat for convenience and the hitch height varies)....
I've launched my three boats in so many different ways...and each boat has it's launching/retrieving sweet spots. My Buddy has a Interceptor and had a Stroker Bass boat, both on Boatmate trailers...he launches consistently the same way every time as his system never changes (only locations)...I will say it's partially because his wife listens to him and never deviates from her instructions; whereas, my wife knows everything and makes sure to remind me whenever I have an idea...in her defense, my ideas usually costs us more money!