RE: Hucker and mast
To really extend the range of the 5.6 m2 Hucker I'd suggest the Sailworks
460 Backbone mast.
With this mast and a little head cap extension on the sail you get a very fast and easy to handle slalom sail.
The upper leech is tighter than a Retro for sure, but not as tight as the 5.6 Hucker on a 430 cm mast.
I sail my 5.6 Hucker this way about half the time.
Hope this helps,