4 inches infront of the shrouds. I can measure tonight if I think of it.
I measured last night, the magic number is 6-1/2 inches in front of the shroud attachment tangs. This is to the centerline of the eyestraps which hold my outer spin blocks. I also have 2 smaller blocks mounted on the front cross beam which the spin sheet passes through after routing through the outer ratcheting blocks.
