I use my brother's F150 and he has a Curt adjustable, dual ball hitch on it with a 2" and 2-5/16" inch balls on it to pull his shack and my boat.
His iceshack uses the 2-5/16" inch ball with no shock when pulling. It is approx. 1,000lbs. lighter.
When I use his truck to pull my Alumacraft Competitor 205 with the 2" ball there is a thunk when starting and stopping. The trailer has a Leverlock hitch on it.
Maybe the Leverlock coupler is known for not being as tight and the problem cannot be resolved, I don't know.
If that is not the case, what is the best shock absorbing hitch that is good for summer and winter with salt on the roads?