Re: How much Angle in my spreaders?
If you look at the current crop of backstay-less rigs you'll see that the spreader sweep appears to be 25 - 35 degrees aft, in some cases even more.
If this is going to be a quick boat that gets 'heated up' multihull style and ends up sailing high angles all the time rather than truly 'running' DDW then even a severe spreader sweep won't be a big issue.
We have a releasable backstay to accommodate mainsail roach, our spreader sweep is about 25-30 degrees.
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"