While I can't speak specifically to Mainships, the shoe is designed to help with horizontal loads and not really vertical loads. The one on my charter boat became worn. Had it bored out and pressed a section of cutlass bearing into it to make it snug again. The bearing lasts 4 or 5 seasons and then I replace it.
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters