Hi, Claus.
I like the look of your Jib/spi boom and wonder if I could adapt it for the Four Sisters?
My jib, originally designed to replace the balanced lug main in heavy weather – which it does very well – can give me an extra knot and help the boat point higher when flown WITH the lug sail, especially when going to windward. It overlaps quite a lot, obviously, but gives a marvellous slot effect. It would be convenient to carry it on a jib furler ready for use but it just manages to foul the yard when tacking. A short bowsprit would solve the problem – but I hate the things when mooring so want to make it instantly removable.
Your jib boom, fixed to the mast in some way and with a decent waterstay could well be the answer. It wouldn’t take much to fit and remove, it could carry the jib furling line and it would keep the fore deck clear for mooring ropes, too.
What do you think?