so my shorelandr trailer bow post has moved farther up the trailer. I'm guessing about 3-4 inches, maybe more. it is a single axle roller trailer hauling a lund tyee 1850. about how much of the boat do i want hanging off the back set of rollers? or is it all about tongue weight? right now i'd put it close to 250 lbs. the boat is an I/O if that matters. the post looks like it has been everywhere from 10 inches both ways in the past, so i don't have a reference where it should be.