At 04:34 20 November 2017, wrote:
Bondo, sandpaper to 600 grit and 1 each rattle can of lacquer
primer and
white paint. And fix the skid.

Finding lacquer in a rattle can is not that easy unless you go to an
auto parts store like Advanced Auto or Autozone. They sell the
Duplicolor automotive touch up rattle cans, and they are lacquer.
There are a number of different shades of white that you can try to
match. I have found that the Ford "Performance White" is a very
good color match for our 35-40 year old Twin Astir Schwabbelack
gel-coat. Wal-Mart sells sandpaper packs to 3000 grit. Fill, primer,
paint (probably 3-5 coats, waiting for each coat to become touch dry
before repeating), then sand out the orange peel starting with
~600 grit. Use successively finer sandpaper grits after that, and
then some white rubbing/polishing compound to finish it off. If you
take your time, and do it right, it will come out very nicely.

The Simtec/Prestec process is also good, but I think you'll have to
buy at least a quart which (with shipping) is not cheap. It's a 2 part
epoxy, so you'll have to deal with mixing it, and also having a spray
rig to apply it correctly. Then, you'll have to clean up the spray rig
afterwards. You could also brush it on, but the edges will be difficult
to feather in and you will probably see a shade difference. I would
use the Simtec if I were going to redo a larger area, but for the
superficial (non structural) underside of a wingtip, the rattle can
solution works best for me...

Good Luck..

RO