first off welcome to the site
and the main reason you DON"T find many designs or info on WOODEN ladder stands
is they have been proven to be ticking time bombs where hunters have died using
they have been replaced with METAL ladder stands in all but a few die hards that still don;'t want to switch over!
the costs of buying all the materials to make a GOOD wooden ladder stand, (treated wood, coated hardware for it, time spent making)
its WAY cheaper, and a TON lighter to buy a pre built metal stand
that of if your a GOOD welder and like to build your own, it can be done, , but it still HARD to beat the prices on pre made ladder stands that are mass produced!
so do yourself a favor on the safety side, DON"T make or use wooden ladder tree stands, there dangerous, and WHY you don;t see them any more in MOST any hunting property today!