Ah Dave, you've obviously never been to the indoor venue at Lilleshall
Up in Scotland, the squad have been priveleged to go to an airforce base in Lossiemouth at the start of the last two seasons to get sightmarks and tuning up to 70m in one of their aircraft hangers. It's great fun, but the steel doors and concrete floors are not very forgiving of a miss! (as if I would LOL)