Crude, but effective. I wouldn't be too concerned about cleaning it up afterwards - 90% can be dug out quite rapidly, the rest calls for half a dozen skaters w

Crude, but effective. I wouldn't be too concerned about cleaning it up afterwards - 90% can be dug out quite rapidly, the rest calls for half a dozen skaters with brooms or an industrial size vacuum cleaner. (Think: a trailer with a beefy diesel engine on it to power the suction pumps - I watched one clean out a drydock once. Never thought I'd find cleaning up a mess so fascinating.)