Many years ago I attended at talk on gelcoat maintenance by Mr. Schneider
(the "S" in LS)

He clearly stated that it does not matter at all if polish used on glider
surfaces contain silicone. The reason: exactly what Bob also notes, no
professional repairs can be done unless the surface is ground way beyond the
depth to which silicone can penetrate.
I guess he should know. I have since then used silicone based polishes on my
gliders, and I have also had them repaired (dont ask..) without any
complaints from the shops

Happy (silicone assisted) soaring,
Lars Peder
DG-600 EE, Denmark



"Robert Gaines" wrote in message
...
Easy to use and silicone free as far
as I know.


I would bet that repair shops clean, clean and grind all old areas back
to degree that there will be no problems with any product used on a
surface.
There are so many contaminants floating around that a repair shop must
go through a careful cleaning of the damaged area before any work is
started.
So, I doubt that it makes any difference as to the brand/type of polish
used.
Your opinion may vary.
Jump in.
Bob