Guys...forgive a POM living in the US from interfering in an antipodean (
) thread, but I did all my own prep on a fiberglass body a couple of years ago. I did all the sanding and filling (and sanding and filling and sanding and filling, and sanding and filling ...etc) and was just advised by a professional body guy during the prep, but dear god, it isn't THAT difficult to take all the seams out and smooth down most of the body.
It took me almost 200 hours of prep work (see my pics), but other then pneumoconeosis from inhaling fiberglass, IT WAS A BLAST!!!!!
As folks have stated, THERE ARE NO FLAT SPOTS ON A COBRA, and this is NOT rocket science guys,
BUT it does require patience and attention to detail.
BUT the sense of pride and satisfaction is AMAZING...good luck, whatever you decide!
(and let us NOT talk about cricket...LOL)
Glyn