Will going to something significantly bigger than regular trailer tires give me more than 3k miles out of a set of tires? My duck boat is a War Eagle 1436 so probably doesn't weight 600 lbs with the motor.

I've tried the motorcycle trailer tires (570x8") and the dime store 12" tires but neither lasts for long. I'm just about ready to go to the junk yard and get some 20" rims then put Michelin LTX's on just so I don't have to constantly change tires...

Tractor Supply has these, though...thoughts or experience with going to a much wider tire for a boat trailer?