I have back-seated with the Reds during their pre-season training on 5 occasions (usually 2 or 3 trips per visit!). They really are very accommodating and it's not limited to potential team members or anything like that. Plenty of WSOs have had a go too. Best to go as late as possible before they go to Cyprus because you might get lucky and get a full 9-ship practice; the early ones tend to be 4 or 5-ships only. Once they've started displaying then the in-season practices are really the only chances - I think their rules restrict the carrying of pax on 'live' displays.