shut lines returns and flanges

[Talonmotorsport]

I've been tidying up the shut lines on my nose,bonnet and scuttle and have come across a small design problem that I want an opionion on.
Option A: fit black edging strip on the bonnets leading and trailing edges, simple but not very attractive.
Option B: make a beading on the bonnet edges of about 6-7mm in the form of removable mould flanges and trust that gel coat is indeed strong.
Option C: put return flanges on the bonnet and use locating pins.