I sharpened mine with a file. The points make a tiny hole, you just have to press through the vinyl to check the wood subfloor, not deep. On the perimeter I put it up against that rubber molding and a fake joint in the vinyl so the hole is hard to see, almost disappears. I try to use the same holes each time I inspect for leaks but they can be hard to find (which is good).
You would want to try to minimize probing around the entrance door, bath and shower, and kitchen, places that may normally see a wet floor. The vinyl is a waterproof cover for the subfloor so you don't want to leave holes in it.
The most likely leak areas are under pano windows, subfloor next to rear bumper storage, hinge side of entrance door, under awning support brackets, and where water runoff from the roof concentrates.
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
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