Don’t think it would work at Drummers – even though its one of my favouritest trails it wouldn’t translate to a cam – I have a cam and wouldn’t use it at drummers
to answer your question
1 – I know many that do
2 – anything, go pro has the best attachement system currently in my view
3 – you could film quite a lot with a 16 gig card but the batteries would probably fail first
4 – see above
I could see more value in the nature programme cams that work off movement
set up one/multiple at an approiate point/s
pick up cards end of each week – pt on youtoob with an id code
put up sign near start of trail telling people they can view themselves via YT like at alton tower rides
distribute via email
not sure how you would be with the law on this sort of thing?
just a thought
Plum