Got this:

Brilliant little kit, really going miles quicker now. All the gaps, I've been cutting down strips of the off cuts and filling them with plastic, then melting it all together. It's a more lengthy process then just tacking it the whole way but it's actually all one piece of plastic now, rather then two or three bits.

Just doing it every other 2" at the moment then will do it all over.

It LOOKS like I've just ran a hot soldering iron over the two pieces but I haven't. Gone right through with the soldering iron til it was all molten then filled in with plastic then smoothed it over. It's the same process as metal welding but much stronger.

Halfords wouldn't sell me fibreglass cause I'm not 18, apparently I might get high off it.

Luckilly dad took me down there.
Just got along the number plate, then it's all in line, go along with the welding, then get the fibreglass on it, then I will out a small amount of body filler in and shape any imperfections. You could just use fibreglass but it will crack easier in a bump.