There were two models of venture cat 15 produced by MacGreggor.
The first one had very small hulls and the trampoline was above it like the Hobie 14. The second one had the crossbeams bolted directly on the flat deck on the hull and the hull had a bump (seat!) between the two crossbeams
I think that the older model was better even if it had almost no flottason.

I do have a few pictures of the old model and I owned and restores the latter one. I still have my mast, boom and mainsail from my Venture Cat 15 and I was planning to build an iceboat around it

Understant that these are "project boats" I am having difficulties finding part and informations for my Nacra 5.2 so the Venture Cat will require extranwork to replace key components.

My advice is not to put to much money on the boat and sail it ASAP. If you like it, you can start to upgrade it and put some major repairs on it.