Re: trojan foredeck repair
If you can get the outer glass off in one piece, sure, go ahead and re-use it. You'd probably want to put it back on, then sand back the edges enough to glass in a tape shaped piece of cloth, then fair it with fairing putty.
If you want to restore the original non skid, the only way to do it is to either cut off the piece you're removing around the non-skid sections, or else make a mold from an intact section of deck and use it to shape the putty that covers the seam from the removed piece.
An all over paint job with nonskid is possible too, and easier than trying to make bare glass look good, but it probably will be worth a little less long term to do things that way.
Erik