Got that bi-focal problem myself, wabi. Went to the drug store and tried on full frame reading glasses until I found one that would let me focus on the floor two feet in front of me - turned out to be 1.25's. I carry them in my pack. Only trouble is that when I use them for tracking I keep walking into low hanging limbs.

OOPs! Forgot to add - Congratulations sabotloader. Sounds like a fun hunt with a buck as a bonus.