If you find yourself without a barrel to tuck in due to the surf being crap, get yourself down to any other good hardware store and buy some tarpaulin to satisfy your barrel craving. Heres a list of items you will need to get your own tarpaulin barrel going.

1 x Large Sheet of tarpaulin
1 x Skateboard
2 x Friends (If you have no friends, relatives will do)
1 x Large outdoor/indoor space