Posted By johnwaterson I think it is 1 in 3. The people to speak to would be the EA. As for fall protection it would probably restrict movement. I work in the landscaping environment and I was asked the same question. If using a sit on lawn mower is unsuitable then use hand held, failling that use a strimmer. The above is my own solution, so far it works. As for fall protection what would you harness on to and has it got a clear run? Hope this helps.