We explain to them at the beginning of the day that picking up paintballs off of the ground will cause the guns to jam either because they've picked up twigs, small stones etc with the paintballs, or because they've swollen up from the moisture on the ground. We will 'fix' this by emptying their entire hopper out (although we only really do this for repeat offenders).
Ah we also used to, for repeat offenders, make them empty there hopper out onto a cloth, and sort through, but seriously it can be dangerous, we have had a kid pick up stones and attempt to fire them, fortunately it got stuck, needless to say when he called for help, fully knowing what he was doing well he wasn't playing anymore.
extra fiver 
i think one kid came up one time and was like "how many paintballs can i get for £1" or something, surely people plan these thinks and save up some money in advance, if i was playing punter, i wouldn't really consider going unless i brought like £25 for paint :tsk:
These are usually the same kids who throw half a pot of paint balls at each other during the lunch break. I have no sympathy.
the worst game ive ever marshalled or group, was a family of 4, mum dad and there 2 12 year old twins, these kids where the biggest pansies ever, they made a rule with the parents that said the parents couldn't shoot them? does it hurt more when an adult does it took body armour and a full head mask to get them out :tsk: even though the family spent like £60 i was still disappointed :tsk:
i basically said after that i followed that until they did something stupid like lift there goggles, and yeah you do get quotes or tips etc. at the end of the day safety = happiness or in a perfect world should unfortunatly some punters don't see it this way, and even after i smack the goggles on sign and shout "DONT TAKE YOUR GOGGLES OFF FOR ANY REASON ONCE WE GET PAST THIS SIGN" some still do
