The sails are really tough - beyond my skill
Perhaps I need a bigger magnifier?

I now use two pots of water while I'm painting and wash my brushes in the first, wipe off the surplus water, then rinse again to rid the brush of any remaining paint.
It seems to be effective in preventing my brushes from speedily loosing their point and spreading out.
I can see a big advantage in working alongside others as they might have suggested it years ago!