ShoreMaster Boat Lift Wheel Caddy - Universal Fit - Fits most boat lift brands
ShoreMaster Boat Lift Wheel Caddy - Inexpensive wheel / lift system for your boat lift. Sold as a pair - (two per lift). First come, first serve sold as is. This is a great way to help you install and remove your boat lift. Will fit most major manufacturers lifts. Two pairs available.
Product instructions: https://static.shoremaster.com/instructions/1016280_SMR.pdf
Brand new these sell for $754.00!