Binos on a tripod are superior to hand held bino's. Jim P and RICMIC are correct IMO. You will be able to see much more with 8-10x and even more with 12-15-20x, with a tripod. You can brace your body w/o a tripod, support your elbows, back, and be OK. You can even grab the bill of a baseball hat as you glass, and it helps. But that really defeats the purpose of the higher power glass. Your ability to see detail and spot game out to a mile or so, is unparalleled with 15x ish bino's on a tripod, IMO. The Field Optics Research bino attachment system is what I use, best I've found so far.
Other than the weight, I love my 15x and wish the Vortex 20x had been available when I got my 15x. I use the Minox 15x56.