We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember Richard saying
something like:

Is it worth trying to repair a crack roughly 15 mm from the plug hole in
a fibreglass bath?

I've seen various kits of the web which claim to be miraculous! Or
could use car bodywork resin - as in one of the Isopon kits - to fill
the crack?

If cosmetics don't matter, just roughly sand the crack and apply a
couple of pieces of mat/resin. Two layers if you feel industrious.
--

Dave