Sorry mate but it's just one of those things that come up every now and then, I don't get to choose a date when it's filling in the gaps like this. No not at all, as long as it's not too noisey it will be fine. The secret is to run at least 45psi in your tyres to minimise tyre wear, but yes it can be a little tough on tyres. Murphys *bleepin* law, The last few times I've been there with these guys they've had an instructor available if you chose to use him, some did some didn't. I've always found it helpful as they can often give you the missing piece of advice to improve your driving style. I will get a contact number if you like and we can organise our own day. Big AL