i might try a 3/1 lift, additionally support SL line off of what is left of tree if it is close enough, the tree just past the deck if close enough could have a line and carabiner that could be tightened when load was lifted as high as possible and SL tightened too; then as load came near that point (after off deck?) slacken that line allowing passing where there is more clearnace.
That is lifting all the way up and really working line. But, i might try to kinda lift load with rig and tighten SL, to just support load well enough to spirit across deck (Line lift and 2 men guiding/balancing/hardly any weight, then 'throw' off the downside; if that seemed like less work; without overhead risks, and loading risks etc. Support both end SL supports with a line going from high in support to low on the opposite side/same axis of SL pull and tighten.
Use 3/1 around trunk to anchor the low side, then gain back more than leverage lost in 3/1 due to trunk friction and unparallel lines; by impacting and sweating in the tightening-then squeezing spread lines that lace around trunk together, as to bend them sharply and really leverage them, choking with turns/hitches. Stand so that each 1/2 hitch or round turn etc. is as a 2/1 or 4/1 choke multiplier (sometimes like a short frenchy stack for10/1 choke) X the leveraging of the bent lines, impacting with bodyweight. The larger trunk you come around, taxes the 3/1 potential more with friction, and the unfocused angle of pull. But that same larger diameter can give you more spread lines to induce more leverage after the fact! Turning an efficiency loss against itself to give great anchoring while still keeping specialized tools freed up.
Orrrrrr something like that!
Sounds like a tough won!
:alien:
That is lifting all the way up and really working line. But, i might try to kinda lift load with rig and tighten SL, to just support load well enough to spirit across deck (Line lift and 2 men guiding/balancing/hardly any weight, then 'throw' off the downside; if that seemed like less work; without overhead risks, and loading risks etc. Support both end SL supports with a line going from high in support to low on the opposite side/same axis of SL pull and tighten.
Use 3/1 around trunk to anchor the low side, then gain back more than leverage lost in 3/1 due to trunk friction and unparallel lines; by impacting and sweating in the tightening-then squeezing spread lines that lace around trunk together, as to bend them sharply and really leverage them, choking with turns/hitches. Stand so that each 1/2 hitch or round turn etc. is as a 2/1 or 4/1 choke multiplier (sometimes like a short frenchy stack for10/1 choke) X the leveraging of the bent lines, impacting with bodyweight. The larger trunk you come around, taxes the 3/1 potential more with friction, and the unfocused angle of pull. But that same larger diameter can give you more spread lines to induce more leverage after the fact! Turning an efficiency loss against itself to give great anchoring while still keeping specialized tools freed up.
Orrrrrr something like that!
Sounds like a tough won!
:alien: