Bob,
I think a carbon tube, maybe a quarter inch diameter, maybe little less, buried in the tip of the wing with 4 inches protruding forward of the LE would work to support that forward leadout. It would look like a long pitot tube. Just don't land on it!
We cover foam wings with silkspan, applied wet, then a coat of Titebond glue thinned 50/50 with water. It shrinks very nicely and you can apply film covering onto that, Monocote may require too much heat, but coverrite or ultracote use less heat. Kelly Hite used monokote, I think, and he was just very careful with he heat gun/iron. Hope this idn't a drift from the thread......dg