I had one (twin outboard Powerplay sportdeck) and it was REALLY hard to sell. I personally really liked the boat but here are the challenges:
1. It MUST do 70+ mph with twin outboards. I know this is not easy but anything slower just won't sell and going to triples is a stumbling block for many people. Triple anything equals triple trouble in alot of peoples minds.
2. It must ride decent: all that weight on the transom does not help the bow stay down much and so in bigger water they don't ride as well. Perhaps some long tabs would help make the boat FEEL longer in bigger water. This is another reason that the boat needs to be as much over 30 ft as possible.
3. Gotta cost alot less than big blocks.
4. Some people just cannot handle the looks. It's just not as sexy. I think the sexy look and the rumbling engines are what draws many people to this sport in the first place.
Having said all that, I would buy another twin outboard offshore boat if the quality was high, it did 70+ with twins and it rode well. I really liked the cockpit room and the reliability, but I have a family so my needs may be different than most.
Just my $0.02, I ain't no expert. Good luck.