Maybe duct tape would work better, or duct tape over a pool noodle. I don’t know how tough moldable plastic is and it just popped to mind.Building a chute system and training my sheep to it would solve the sheep handling problems. However, DH sees no point in it, and I can't build it myself. Someday DH is going to get seriously injured when sorting sheep and have a change of heart.
I bought a moldable rubber to put over latches. I need to install my prototypes on my chicken coop door. I want to replace the metal bucket we use in the barn. The handle is bent so that it's easy to slash water on one's legs (and I do too often!). I would use the moldable rubber to cover the bucket handle. This is low priority because DH has been willing to do winter chores, but it's a problem I CAN solve.
If I can't keep the farm (and I probably can't), one of my ideas is a tiny house on a small city yard, landscape/garden the entire yard so there's nothing to mow. Sure would cut down on grass invading the garden too!