Force4 sell guards in 3 sizes. The size of your prop will be the first question.
Guessing you use something around 13" - They do one for 13"...
BHG Marine go up to 16". I may be wrong but the actual engine doesn't matter - your gonna drill holes in it.
Was it your risk assessment to use the guard or the TV people? Do they understand the risks and benefits? If it was my risk assessment I'd not have a 125 in there though unless it was necessary for some reason and I may well have the 125 for whatever that reason is but something tamer for close to people work.
