I use Compufoil. It's extremely powerful and well worth the price tag. It isn't difficult to master, either. I've never needed any support. To give you an idea, my Blink was drawn 95% by Compufoil. I just exported to .dxf and made the firewall and modified a rib for the ply doubler. Most of my deltas are done this way.

It is expensive, though. Over the years I've paid him over $200. Updates are free, upgrades are steeply discounted. His upgrades are something else, though. It's like he started from scratch and made a better program.

Oh, the help file in Compufoil is really helpful.

Forgot to point out that BipeFlyers Tileprint has this function now too! www.blackflight.com