Those who use the go pro to view gutters what you using to attach the go pro to the pole with
Only goes upto 4cms in diameter. So if that's enough then great. If going on toA vac tube you need the correct size. One thing I will say is the mount is a weak spot. You don't want to get a cheap one. Otherwise it will snap quite easily.
Looking for a go pro myself but are they still top dollar?