Ive used tights before to hold carbon etc in my filter it works a treat, im sure it would work for your moss, but it might look a little...strange to say the least
Yeah, might be ok, just gotta wait for moss to cover tight completely.
I use fishing line to tie moss and java fern to bogwood. Find this easiest method for me, when moss taken a hold on bogwood, I simply cut the fishing line and take line away.