Way too much whinging going on
It's a simple task, each club buys a roll mat costing around £5 cut this into a 6 inch square section. This will keep the knee of all the whiners' trousers clean, no other support needed anywhere.
6'' is enough to cover the biggest and smallest of knees, no chance of any miss-understanding or abuse.
I would say half the comments on here sound like a bunch of bleeding women but I think this would be insulting to the ladies who shoot without any complaints