What year model is your Start?
If it's only chips in the paint, Marine Tex is good as a filler.
Easy to apply, easy to fair in, but will require some paint over the top.
If you have an older Start and the nose is sort of "splitting" as the point
where the factory trimmed off the EVA, then it would be better to peel
back the EVA about 2" and use some fiberglass cloth and epoxy resin
(West Systems works well) to reinforce the damaged area, then repaint
and stick the EVA back down.