The 37 was the first design, and the 34 came later. I have heard that Crealock said that he made some minor changes to the 34 design based on the 37 experience. If you look at overall length and the waterline length dimensions it appears that Crealock shortened slightly the overhangs.
Both the 37 and the 34 are very similar, excellent designs that we love. It does make sense though that an excellent designer like Crealock would have tried to apply what he learned from the first design experience (PS37) when he made the second design (PS34).
PS34 #67, 1987
S/V Ubiquity, Pacific Seacraft 34 Sailboat
Using the same logic the 31 was third design and the canoe stern was gotten rid of.
My understanding is that Crealock designed the 37 without pressure from a builder, it was the design he would go sailing in. Cruising Consultants picked it up and had the molds built, built a few boats and when they went under Pacific Seacraft picked up the molds. The 34 and 31 were done at Pacific Seacraft's request and their input. The Cabo Ricos were done with Cabo Ricos input and requirements. His biggest regret on the 37 seemed to be that he had not patented an idea that he had come up with a few years earlier that was very similiar to the Scheel keel.
When the 44 was introduced I never got the feeling Crealock was all that happy with the design. Too many comprimises to stretch the 37 to 44 and he actually expressed that at the Pacific Seacraft (Fullerton) introduction of the boat.
The 44 mold development and the move to Fullerton (satisfying the Air Quatlity Management District requirements) put the company into financial stress and they sold out to the Singapore based corporation. A few years later the founders left and founded Cabo Sportfishers and began production in the first town east of the Air Quality Management District.
The 40 had the benefit of everything that came before it, but it is a significantly larger (and more costly) boat then the 37 or 34.
Between the 37 and 34, I believe the biggest issue is the difference in storage on the boats and the propane locker. The aft propane locker on the 37 is large enough to store 2 10 lb tanks as well as a 5 gallon gasoline tank, diesel engine oil, hydraulic fluid(autopilot), 2 stroke oil and any acetone, etc fluid you may want to store on a longer range trip/cruise although for insurance purposes I only store propane in the propane locker.
I do like the shallow cockpit locker on starboard side of the Crealock 34 above the quarter berth. If I had the same on Crazy Fish I would modify it to make it a bit deeper to store a liferaft in a valise. Currently have a Switlick canister mounted just forward of where the dodger used to be and it just destroys visibility forward when seated in the cockpit.
Being used to the 37 the 34 down below just feels a bit pinched to me.
Having converted Crazy Fish from a wheel to tiller, in either the 34 or the 37 I would seek out a tiller boat. The wheel pedestal breaks up the cockpit and with the tiller you get to sit up forward in the cockpit rather then behind the wheel when driving the boat, there is a lot more feel with the tiller and at anchor the cockpit has a lot more space. Going to work on a solution where with the Monitor windvane or the below decks autopilot (WH) is engaged the tiller does not sweep the cockpit.
So I recommend going with the 37 but if you would be interested in a well-found 34 for under $100,000 there is one sitting across me. Boat was recently sailed down from the Pacific Northwest to San Diego and the owner was making final preparations to head south when family health issues caused him to alter his plans. Boat is ready to go.
Crazy Fish - Maintaining, Upgrading and Sailing a Crealock 37 | SV Crazy Fish