ive always read and been told that tongue weight should be 10% 0f total weight. but i dont think there is an exact percentage formula cause very heavy trailers would put too much on the hitch and very light ones... how far back the axle assembly is will also affect more than just tongue weight. seems like it will affect the rate of the swing on the vertical axis among other things.
keep in mind also that weight placement will change with fuel load, gear, etc... i think 7-10% is a good starting point and probably good enough for our little boats. but i think it is also important to have the heaviest part of the load over the axles and just a bit forward. so keep that in mind too.
truthfully, you can and should put a good bit of thought into it but its gonna come down to feel and seat of pants adjustment. start at 7-10% and expect to make some minor adjustments to get it just where it feels right
|