I bought an 88 sailfish 25 hull and am restoring it. Had it soda blasted am getting it painted. The tanks, motors, controls, head, batteries, compass, electronics were all stripped out. The fuel fill and vent lines were cut off at the fiberglass on the starboard side so have to be removed and replaced. I saw that it helped to cut out a round hole for a plate on the gunwale inside the area where the fuel fills are to gain access to them and the lines . So I was wondering what you use to cut the hole in the fiberglass. I was thinking I would use a sabersaw after marking the circle where I wanted it would that do?