while taking out the old carepet, I have found an area under the tm foot pedal that crunches when I push down on it. No visiable stress crackes, but it does move down a little. I was wondering would a thin piece of 1/8 plywood be acceptable or is there something better on the market that I should use before I recarpet? any other tips on getting the old "fur" and glue off besides 10 gallons of elbow greese. Thanks!

To get the glue off, use a floor scraper from home depot that has the replaceable blades, just be carful and don't gouge out the glass.  You should be able to get it good enough to apply your new adhesive over the old.  If you want it all up, use laquer thinner to wash the rest off.  

As for a patch over the floor, 1/8" plywood won't do much.  I would find the a piece of aluminum about .060" or thicker and put that down.  Would be a whole lot stronger and more solid.

Don't think your answer is going to be that simple.  The plywood under the deck is probably gone bad.  You will have to remove the glass replace the wood and then reglass.  Check this guy out he does this for a living. http://www.jimmysmarineservice.com/

Good Luck,

Tom D.

My very first girlfreinds Father had one of those installed right in front of her bedroom

Yes the "Proper Way" to repair his deck is to replace it and eventually, if he keeps the boat, he will probably have to do that but most likely will decide to get rid of it or junk it when he finds out what it cost to fix it properly.  Using a sheet of aluminum over it will give several more years of good service, not cost a small fortune and make if feel pretty strong.

I had an old center console the whole center of the floor was rotting out.  I put aluminum over the whole floor and used it five years until I got rid of it, was still just as strong and riggid as any floor.