That's pretty much it Rob. Plus sand it back to filler, then apply some strong ass kind of filler over the top like fibreglass filler or there's even one you can buy with carbon in it. I've also got some fibre tissue which can go on thinly.
I kinda would like to start fron scratch as I know I could build it lighter, stronger and better next time. Ah well. This should fix it though...and if it doesnt then maybe that would tell me I do have to start from scratch. Cross that bridge when/if I come to it.