The best place to let someone through remains on the exit of corners, with the backmarker taking the inside line and opening the ideal line, though I agree it compromises their pace at that moment.
Yes that is exactly what happened in this case. I took an inside line on the exit of the final turn to allow Tom (who was lapping me) a free run on the racing line. However I was a little too accommodating and pulled over too early, consequently we were well past the start line and almost at the turn in point for T1 before Tom got past. So I couldn't start accelerating before the turn in point for T1 which compromised my speed massively. By then Goran (who I was racing with) had a clear run out of the final turn, the draft from Tom down the finish straight and was all over me by the time we got to Avon Rise. You would need to look at the replay yourself to see what I mean.
Goran did nothing wrong, the situation only arose because I moved over too early (incidentally I hadn't been shown a blue flag before I moved over) and Tom was not held up at all. So all I'm saying (which is really for you Hristo given that you are the one most likely to be lapping me
) is that next time I would have kept my to racing line and only yielded when I wasn't going to compromise my own race.
The trouble is, the best way to avoid compromising my own race is to allow the leaders past under braking which is much more dangerous. Compromising my exit speed is not the thing to do in the 65s. I'll try to let you by on the exit to corners but if you are really close should I risk moving to the inside line or should I stick to the racing line? I expect you would prefer me to stick to the racing line.
Oh, well the trick with taking the inside line on exits to let someone through is only really useful in slower corners where there is heavy acceleration out of the corner. I wouldn't suggest it for fast corners and flat out kinks. I agree it's best you keep the line and speed, and maybe just lift off a bit when the leading car goes off the line to make a move. I never liked when a backmarker would slow down on a straight or a fast corner while they're still ahead of me, or worse - change direction when I'm just behind them.
As for letting them past under braking, if you just keep your line and normal braking point (and braking effort), then the leading car has no right to object in case you happen to brake a bit earlier or carry a bit less speed, they should anticipate that and either make a move if they're close enough, or just slot behind you. The only issue with this is when there is a vast difference in speed, but that would only be the case if we run a mixed grid of Amateurs and Novices. The important thing is not to panic and to keep your eyes on the road rather than on your mirrors, and just drive normally.
Again though, it depends on the situation and it's always slightly different every time, so it's important to be as much aware as possible of what's going on around you.