Hi there Bertman.
I've had a few Crossover boards because I liked the idea of only having to take one board on holidays and be able to try various foiling disciplines. Wing, Wind, Sup foiling as well as regular Sup surfing.
I've had a
Fanatic Sky 6'11" Windsurf edition. (3 in 1)Good for learning Winging and Sup foiling, but sail mast track and foil mast are too close together, making it super twitchy for Wind Foiling. Not designed to sup with fins.
Naish Hover Crossover 7'6" 120 lt. (4 in 1) - see comments below
RRD 5'10" Pocket Rocket 122lts (3 in 1) - see comments below
My experience tells me that the biggest issue you'll have is combining is a board that is suitable for regular supping (on fins) with a board that will also be good for Wing dinging.
The Naish Hover 7'6" 120 lt, I learnt to wing on, but as a sup it was too small for me to use comfortably. I'm 85 kg's and usually sup on an 8'10" Sunova. The Naish was fine once on the wave, but really hard to balance between waves (unless it was really glassy). The bigger Naish may solve this issue, but it would be getting way too big for winging IMO.
When I put a foil under it, it would ride nose high, because it had a rocker designed to allow it to work as a sup. I got around this for winging by putting a small 'wedge' under the foil mast base which made it fly level.
By sliding the foil mast all the way forward in the tracks, it reduced the effective length (and swing weight) of the board once flying, making it fun to ride and easy to learn on, even though it would have still looked huge to those watching. I learnt to gybe and ride toe side on this board no problem and it was easy to slog back on if the wind dropped.
However, once I knew it was not suitable for supping (on fins), I was carrying extra board length for no purpose, so I sold it, but don't regret having it.
The best crossover I've had is the
RRD Pocket Rocket. It's only 5'10" so it's nice and compact for winging and has track mounts well place for the ding. It also has a Tuttle box right near the tail for Wind foiling, which allows a good distance between sail mast and foil mast, compared to the Fanatic Sky Sup Windsurf Edition. I think it will be ok for sup foiling too (see vid below), but obviously it doesn't cover Supping on fins in its disciplines.
www.facebook.com/watch/?v=319183779440047My recommendation:
I'd suggest having your favourite sup board as a 'stand alone' for sup surfing and enjoy its performance.
Then get a crossover between 6' and 6'10" and 120- 140 lts (depending on your weight) to learn winging and sup foiling on. There's lots of these, Naish, Fanatic, Konrad etc.
If you end up loving winging (as most do) you'll end up with a small wing board further down the track.
I currently have a 5'4" for me winging, but still have the Pocket Rocket as my cross over and my wife's 'learn to' wing board.
Hope this helps.