To fill in the dark and cold hours and as there is little about it in the boat manual, I thought I would try to codify sail trim for my BR20 (two pdf files attached). 

The usual elf n safety caveats apply, namely:
1.  I take no responsibility whatsoever and anyone foolhardy enough slavishly to follow these schedules does so at their own risk
2.  The schedules are draft and many of the opinions expressed therein have not been tested properly (or even at all) by me
3.  Quite a lot of the stuff only applies to my boat and others similarly modified

Nevertheless, I would welcome corrections, comments, additions.  The aim is eventually to produce an accurate and helpful set of pointers that can be used by any BR owner to get the most out of their boat. I shall be mother.

I shall stand by for a flood of replies from the experts.  I regret that Claus has gone walkabout as I am sure that he would have much to contribute.

If I manage to get all three mainsail leech telltales streaming horizontally at the same time, I shall definitely post a picture in celebration.