Going a bit off topic here, not really looking for materials or products, just want to know, is it worth it to wax and polish the glider? For example, keeping it in great condition, smooth and shiny?

Senna:
I have had good luck with the finish on all of my gliders. I have always done the entire glider surface twice each year (with Carnuba wax) being especially careful to apply a good coat of wax at the areas where I use tape. The Schleicher Flight Manual states : "It is recommended that appropriate areas should be thoroughly waxed beforehand so that the adhesive tape can afterwards be cleanly removed without lifting the paint finish."
It is easiest to apply wax to underside of the wings when they are stored in the trailer with the fuselage removed.
ROY