I did the one day course about 5 years ago, great experience, and I learnt more in the one day than I could have any other way. Cost was 200 pounds for the day, which equated to about 90 minutes driving time each. If I were to do it again, I would pay the extra (400 pounds) and have a half day one on one. The one day course is geared towards drivers who have never rallied before and starts with videos, safety, wasted time etc. If you have any pro rally experience at all, I suggest you go for a one on one session. Although I came away learning a LOT, i think i could have learnt a lot more by myself with out the time wasted by others driving into ditches, spinning etc. All good fun to watch and laugh about with the others ,but if you are really keen on learning, a bit of a waste of time and money!