re: Towing a boat with 1/2 ton truck.

OP be aware it's possible your insurance company may not cover you in an accident if you are over your weight limits and max capacity isn't a number they consider. If you are towing near max cap. you are more than likely exceeding another weight limit.

In the RV old school world there was a 80% rule. Only tow a travel trailer that weights 80% or less than your max towing capacity.