I did it on my 29 Blackfin, to mount the radar scanner. I marked the bolt holes, and then placed a thin bead of 5200 fast cure around each one on the fabric.. When the 5200 cured, I took an Exacto razor-knife and cut each hole through the fabric, then proceded to drill the metal frame. If you have a piece of metal tubing the diameter of the bolts, griind a cutting edge on one end of the tubing, and with backing block, punch each hole in the fabric.
I had a flashback from many years ago when I was installing a floor-mounted hold-up switch in a brand-new retail store. The carpet was glued to the concrete pad, and when I took my masonry bit to drill the holes for the plastic anchors, the bit caught the fabric and wrapped it around the bit, pulling it right out of the carpet before I could stop the drill. I made a run in the carpet about 6' long. :shock: The owner wasn't amused.
Better safe than sorry.