big ones are best for learning, small ones jump best, med size boards are an all round fun machine offering the best of both worlds...
These are the directional boards I've used.
6ft6in Underground directional
6ft converted surfboard
7ft6in Mini mal Surfboard
6ft Underground directional (140 sessions on this beastie)
150cm Manolo Directional
Hey man directionals rock, you're Dad will love kitesurfing.
As expected the Minimal get's me going REAL REAL early but not really an air machine.
The 6ft Underground directional used to be my main board and this board has a monstrous windrange when ridden right. The fins increase the range of this board heaps, toesiding is easy peasy on directionals and they jump soooooooo well. My mate has a 150cm Manolo directional and that thing totally kicks ass. It's an advanced board, not for beginners but the upwind performance is unreal, it holds so so much power, goes incredably fast and even in light powered conditions you can jump really big with it.... interesting things about directionals, a lot of the top guys use directional style boards called mutants (Mark Shinn?? Flash Austin?? No they are not "has beens" either). These boards are small and hold mammoth power.
Yeah man I use both Directionals and Wakeboards and like both... but directionals have their place in kiteboarding....
So in answering your question....
Yes I'm into directional boards..