Re: balancing tires on boat trailer
i mount and balance my own motorcycle tires. and obviously use sticky weights. the clamp on kind suck. even for car tires. just use the sticky ones.
car tires might be harder though. for bikes:
you stick a pipe or the axle through the tire and spin it while its elevated, like on two boards. if it stops slowly without any heavy spots, its good. if there is a heavy spot, stick a weight on the opposite side and keep spinning until it rotates without any heavy spots.