govols
I had an L4V and many other Cobra drivers as well going back to the SS350. Don't have an F6, but do have the F7 along with an Amp Cell and Bio Cell. They're all good IMO. Cobra's hosel adapter isn't that complicated like some are. You just adjust it to the loft you want. It can be adjusted from 9 degrees to 12 degrees with two draw settings.
The draw settings are supposed to change the lie angle (more upright). Just remember when to increase loft you close the face slightly and when you reduce loft you open the face angle slightly. MyGolfSpy has said Cobra is only behind Ping when it comes to forgiveness.