Yes.... they do dent your car when hitting them, my boot floor took a pasting. Nowt your 18 stone builder mate can't fix tho.
They don't really want to wet the track but after a bit some makes of tyre start howling so thats when they soak the tracks. Its a pain but you do get used to it. As punko said, its not about speed, just play with the throttle and you will soon find the balance, then after a bit you will probably start picking up the pace anyway.
I'm going but i dont think i'll be taking part, just got back from the ring and i'm being pestered to do a track day in sept. Meeting up with a load of lads i've got to know though.