Not a good idea methinks, you need the grip for a good show - youve just got to build your machine for it. The current arenas are hardly grippy at all, especially with all the dust and rubbish that covers them half the time when theyre not brushed down and could be grippier.

You may want the slip for pay-to-drives but save it for them only (and if you do use ultra slippery wheels/floors for pay-to-drives the control is pretty sh*t, not that youd care obviously)