Rolf, I said sheet tension to kee pthe telltales flying, not tight.

On the Spitfire (and my 17) I woould say it was "one hand, no leg bend, not actually that tight" tight...for the "light" 0-1 wire conditions..

As opposed to "max tight" being "both hands, bending and extending legs, bending boom and creaking tight" tight



I would also suggest adding many telltails to a sail when learning and then mucking around with Rotation, Downhaul, mainsheet and traveller untill you

1, Work out what is fast
2, work out which telltails you need to use in which situations (and which ones to ignore).

I think I have around 10 sail telltails (on each side of the sail) plus 4 leach telltails on my Inter 17 sail and I don't use all of them in all conditions.