Being a minder does inherit some risk, it takes a keen eye, ear, reflexes and practice to do it well, requires supreme confidence in the riders ability. I really enjoy the task myself, it’s the closest thing to team work in Trials competition, plus you get to tell the experts how to do things you can only imagine doing yourself 
The main task for the minder is to Not touch the bike until you are needed (that would be a 5) then to catch the bike so it doesn’t fall on the rider in the event they need to bail. Minders are usually the fist to reach the kill switch too.
…I’ve crashed hard several times minding but my rider survived. Boots, helmet and gloves are recommended!
