I've always been curious exactly how you guys tackle triangular saucer sections like the Prometheus and the Intrepid. I've always wanted to take a stab at it but never have been able to get it right.
Like: Do you build the front half and rear halves separately? Perhaps build a rough cylinder shape, and extrude upwards towards the bridge? Any tips would be wonderful, and thanks in advance!

I have modelled the Constitution, and a few other random things, but the shapes of the aforementioned ships saucers are just frustrating!