We used Jacobean Oak varnish, cover the areas you dont want varnished with black maskers, (bootwelds?) and drip it on the centre of the toe cap with a matchstick....it takes a while but once done and hardened cover your toecap with a sock and I'll last the time your in the Corps...easy days mate.
happy days, this chad medal ceremony at 45 might be an arse ache (we've already got our ganners gongs, dont need to be re-presented with them!!) but at least the lovats inspection will have one less thing to worry about!!