I'd rather my dad leave it up rather than not putting it up and getting wee all over the seat, which he doesn't clean up. Then when my mum or I come to use it and complain, he says, 'deal with it'.
i hate clingfilm, every time i use it, it ends in a disaster with small bits of plastic everywhere and the smallest of container having to be covers in several pieces of small clingfilm, so it is completely covered.
Just to pick up on your problem with clingfilm - have you tried keeping it in the fridge. I do this and rarely have a problem with finding the edge or tearing off the amount I need.