I did this on my H20. Drilled about a 1/2" hole on one side; whipped up some peanut butter-thick West with filler, and filled in the hole and as far around the hole as I could get it. After that dried, then I could drill a 3/16" hole through the middle of the fill, and through both sides of the bow. Ran hi-tech line through, with a washer and a knot on one side. When I wasn't using the chute, could easily pull the line leaving only the small (and waterproof) hole. Sand the big hole side flush and hit it with a touch of white spray paint and you'll never see it.