Coat the secondary or not?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: pepperman-at-softhome-dot-net 

I've read several opinions on whether or not you should coat the
secondary with some sort of sealant/protectant (e.g. polyurethane,
epoxy, etc.).  The pluses are that the coil is well-protected, and
possibly more attractive (depending on your feelings about what
looks good).  The minuses are that if you coat the coil, you can't
really get at it in case something goes wrong.

What are the current opinions, for and against?  When would you
want to have access to the windings, and when would it not matter?

Michael Johnson