Two things I have tried and still use one of the two. One is to get that perforated rubberized shelf liner,(comes in a roll) An instructor i met uses that. The other thing i did was peel the soft fabric off a mouse pad and just use the rubber backing to rest my guitar on. Both of these keep it from moving around. Dan
Good idea, although I'd be concerned with it reacting with the finish of the guitar. I guess checking with the manufacturer would help curb that.
i have that same problem, its pretty annoying. i play fingerstyle as well and i have to be sitting down, my guitar used to move around quite a bit but over the years i created a (bad)habit of holding the body in place with the pinky and ring finger of my right hand. ive been criticized for this to no end, but its comfortable and it works for me. heres an example http://www.youtube.com/watch?v=9Ran3w9nfNk. one guy i know used to carry around one of those caps you put on your head while swimming, it was rubber and he cut it in half and kept it in his case.
Great suggestions, folks, especially the rubberized shelf liner and rubber swim cap. Anchoring with the pinky and ring finger is definitely out- I use my ring finger to play and anchoring the right hand is unnecessarily limiting (the optimal state of the hands is kind of that of "dynamic relaxation" which anchoring it would mess with, plus it's helpful to be kind of floating above the strings so I can move my hand upwards or downwards, to bring it closer to bass or treble strings). I've tried a strap but didn't really enjoy it, so maybe the shelf liner or rubber cap will help. Thanks!