I disagree with Tim
I seriously doubt any Pilots could be injured by a stray/out-of-control BMX bike,
whereas I am not familliar with a flying club that has never had a plane unintentionally come down off the runway due to "dumbthumb"/Spiked/StructuralFailure/DeadStickShort. If there wasnt a risk, we wouldnt see the Assumed Risk lawyerspeak, and we certainly wouldnt need $mils insurance.

BMX: $mils liabilty insurance not req
AMA: you get the idea

Tim, just because you have previously been flying over land you dont own/have permission, doesnt give you the right to fly over land you dont own/have permission. You cant seriously be thinking you are allowed to just fly over other folks property because you were here first.

- -

No Fly Lines must be upheld.
Tell them
"No BS'ing, fly within the lines or dont fly....
or have the club move the lines to your liking.
But the line is there now, and we all have to stay inside the lines"