i just picked up a Hoffman 2 post and I'm trying to find there site i have no luck anyone know what there website is and the hoist is 3 phase 220V is there a way to rewire it to single phase
You won't be able to rewire to single phase. You will need to replace either the motor or the pump assembly. The other option is a phase converter, but it will likely be cheaper to buy a new motor.
I've found you should oversize the drive when you are running single phase in and three phase out configuration. For example, if you've got a 3 hp 3 phase motor, you should choose a 5 hp drive.