Hi Rom,
Just saw your post and I had an idea. I just went to the boat shop to get a few new rollers for my boat trailer. This might work. They are very similar to pallet jack rollers (I also have one of these), and cheap. The soft rubber ones are no good but the rigid plastic ones (usually blue) that are for tinnies. They are only a roller and usually attach with a rod through the middle and split pins. Maybe this helps
