Hull to deck joint.?.....again..

[Bryan A.]

The picture below is the inside of a Whitewater 25. I am in the process of strengthening the cabin roof which is the forward deck. I also want to glass the hull to the deck at the joint to make it stronger and water tight. Sometimes water will come in if I hit and extreme wave.
The problem is I have screws about every 6 - 12 inches holding this joint together and the rubrail on. I don't want to remove the rubrail at this time. The plan is to grind the screws flush and glass the entire seam. The screws obviously get hot during grinding. Do you guys think this will affect the glass and resin at all causing the screws and rubrail to fall off later?
Another question, If you look at the pic you can see the glass looks orange. That is from the glue that held on the Gorilla Hair. Any tips on getting that stuff off? Others have suggested chemicals but the boat is covered right now and I would like to avoid breathing in all that stuff under the cover. The best tool I have found so far is a wire cup brush on the die grinder.
Also any other tips or suggestions to my plan would be greatly appreciated.