Bolts on Broad Stand

[elliptic]

"Any attemptee or supporter found to actively(Deliberatly) damaging the enviroment or nature of the BG route ....etc" or words to that effect.

A general statement seems a good idea, but also something specific about "leaving BS in the state you found it" might also help drive the point home eg.

"Contenders who choose to go via Broad Stand often arrange to have supporters in place with ropes for protection. This is acceptable but permanent anchors must not be placed and all ropes and other equipment should be removed immediately afterwards."

As for 3:1 assisted hoists, do people really consider this as a viable option?

That was meant to be tongue-in-cheek but I agree with your main point entirely.