Re: Reaching struts
The guy lead block should be forward when reaching tight and the pole near the forestay.
With end-for-end twingers do a good job of that, obviously you don't want to be moving the block on every gybe.
With dip pole, and double sheets/guys the guys can be lead through a forward/midships block at all times. This also helps take some of the load off the foreguy as the pull is more downward.
Reaching struts seem to be fading.. definitely not worth the hassle of setting/removing for every gybe, or going through the hassle for a 30 minute leg. If should be long enough to extend beyond the shrouds from it's attachment point. I think and on-deck attachment point would not be 'in line' with the normal position of the guy. It's more of a chafe protection measure than a 'angle of effort' measure as the difference is only a few inches anyhow. A forward or twinged guy lead from the widest foward point usually avoids the grinding on the shrouds - though loads on the lifelines and stanchions can become a concern.
1984 Fast/Nicholson 345 "FastForward"
".. 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)