You will need to remove all imperfections/blemishes till your happy (using a polish or cutting compound) .

New Zealand The cost of one of these Sea Cat fibreglass reinforced plastic boats with a 25 hp outboard engine is 3,000 euros. Surely it doesn't matter what the material underneath is if you are talking about a painted surface.I /think/ the newer "coloured T-cuts" you mention have fillers built in (rather than just being an agressive cutting agent).

I was a little unsure wether in time the autoglym polish would cause any problems by way of a reaction with the fibre glass or the paint finish on the fibre glass sides.

Trusty tcut sorted that out but i now carry a rag in the boot to remove the plop ASAP to avoid damage. Sure, it might make the surface look good, but you would be effectively removing a thin layer of paint.

Originating in the UK, the company has expanded its reach globally, developing and manufacturing a range of compounds, polishes, and applicators.

Their product range is designed to cater to both professional and amateur users, focusing on efficiency and superior results. We also have an old fibreglass garage door that needed a bit of TLC, so we applied a new layer of gelcoat to it.