We’ve got a lad at the club with one (Bortex) (despite Cats being banned) and it’s just orrible. Unstable tippy bugger, and not particularly fast either. Quite what the design was all about I’ve no idea. For a single handed Cat to work it needs waterline length, that’s why Cats look so ungainly, but ultimately quick GRP.
As for trapezing such a short hull the only real place the thing would be any good in is a pond, maybe QMSC or Frensham.
If I have a suggestion (if it’s Solent Chop you’re on) then an old Contender, or RS600 (plenty of these fun machines around for very little money) or a really old RS700 (some early ones are silly cheap at about £800, might need a lot of love and maybe some GRP repairs, but could come with spare sails and such) all these dingoes will sail well on short chop and rolling offshore swell, go well up and downwind and be fun to learn and improve on.
I had a 700 (4 of em’ in total) and loved the thrill and skills they require to sail well. Good class racing, good support network, spares are easily available because most blocks are Holt or Harken. Only real cost are new sails, kites will pin hole if you don’t get the shoot net cleaned up and the kite halyard to run properly free (any snag and you’ll be hoiking the halyard through the kite and put annoying holes in it)
Do you need a trapeze boat ? What about an RS300 or (god forbid) a Blaze ? Forget a Finn, an old one will still be bloody expensive. Forget a Laser unless you are less than 80kgs and can hike for 4months in one hit (but bloody good boat and very close racing, I’ve just done a Masters event at the club having not sat in one for 10years and came in the top 20%, which just goes to show the capability and mix of the fleet)
Enjoy choosing, ditch the Vortex.