If u look in the picture.U see no holes because it goes in the little recessed rib the rear one just under the that seam line u can see in the pic.One on each side.push em in towards the front.I bought one from Q-lane so i could see how he does it.It also gets one right in the tail.That one really makes it swing around an wiggle.I remember one o my trips to RI i got a hotel for a night it had a pool an I swim tested em in it.
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