I go on a week by week or even month by month basis, because I generally see longer bookings 2 hours plus etc, so its not so much a numbers game. Something else I like to keep an eye on is amount of return clients and new clients; if I'm not getting a good mix of both I would worry because if I'm just getting returns by advertising needs a game up and if I'm just getting new guys I need to be better 'in the room' as it were. I like consistency also, more than being busy per se, I don't like things to be too erratic, or to do too many and burn out, playing the long game and all that. On the very rare occasion I tour I like to do at least 4 though, otherwise it feels pointless, and a busy tour is 6/7.