I’ve got the 160-210, 170-220 (x2) and 180-230. I use the 180-230 with my 7.8 M4 OD, one of the 170-220’s with my 7.0m M4 OD and 6.2m MACH4 (as I use the same boom length with both those sails) and the other 170-220 with my small speed sails (and adjust length as necessary).
I’ve been using the 160-210 with wave sails and also for foiling with my 6.0m FoilGlide. I was wanting to use an adjustable outhaul when foiling, so have been using one of my 170-220 booms, but have just set my 160-210 up with an adjustable end (out of two broken ends – one from my 160-210 and one from my 170-220). Looks like it’ll work a treat! Just waiting on some outhaul lines now, as the ones I normally use won’t fit the thin arms of the 160-210.
All of these booms are super stiff, and I agree with KJ that it’s good to have the wider booms for the larger sails!
Will be keen to see the set-up Ben came up with for you Sue.

