Never ran a goldigger, but did run a johnson pull type one fall, then went with a waynes FRAME mount.   We had a 4wd with fat duels on, they would slip on the rim at 9 psi......pumped all 4 back tires up to 20 psi, solved allot of problems.   Now on tracks......better yet.

 

 Whatever plow you choose, id suggest pumping the tires up, theres allota friction going on back there.