Hi Rick - do you mean fibreglass tissue or lightweight cloth? The only one I ever use is the tissue - marketed for use on walls after removing wallpaper etc to hide small cracks - used with PVA paint of course not Polyester Resin.
If I was able to obtain it would use the water based epoxy - very little smell and should imagine it soaks in a bit - plasticising the surface .
As it is usually use 20 to 30% thinned polyester resin without any tissue of any kind - it soaks into the wood and forms a hard plastic type outer layer. Use two coats if necessary - works well on Balsa, Obeche , Mahogany & Meranti - hardly sticks to real teak because of the oily surface .
Where strength is really needed there are many things you can use instead of fibreglass which is nasty stuff to use. They include nappy liners , roof membrane , paper towels (the type used for dishwashing, the material used by dressmakers to strengthen lightweight fabric - and of course tissue paper if you use model aircraft dope.