Racing Compass - Attachment Point/Legality

Plan on using the T061 Tacktick Microcompass as the NAs. I have a velcro mount set up for it to attach to the mast, but our rules direct that compasses be attached to the deck. Any thoughts on whether I can legally attach it to the mast? (Yes, I have a plan B - deck mount already purchased - can velcro it to the deck . . . but compass is more out-of-the-way velcro'd to mast). Also, any thoughts to confirm that digital TackTick Microcompass is now "class legal?"