If you want to be siao-on, be the medic or LAW gunner.
Guaranteed happening experience. I became a LAW gunner, not because
I was siao-on, but because I was one of the last few to choose a
role.
Try doing leopard crawl with the LAW/stretcher on your back.
Try to suddenly prone down from a standing position with the
LAW/stretcher loosely slung across your back.
Guaranteed happening experience. If no curses or profanities have
ever escaped your mouth before, you will surely start doing
so.
If you want to slack, be the minesweper. No extra equipment to
carry.
If you want to be somewhere in the middle, be the demo team,
claymore team, signaller or navigator. All these roles are not that
siong, but they have their difficulties as well.
Ironically, I became a combat medic after I POP-ed from
Tekong.
Oww.... my back.....