20x80 triplets are much, much better than I expected them to be. They really are amazing on big objects like the LMC, SMC, M45 and M31. The faintest object I have seen with them is probably NGC 7582 (mag 10.5?).
I use a banana lounge and rest my arms on the armrests and head on the back of the lounge. The most important thing is to rest your head. Slight movement helps to see things. It's good exercise for your biceps too. And so easy to set up!