Another problem with shoal draft
Since you asked, according to Cortland Steck, the designer of the H-34 and many mid-80s Hunters, the H-34 was designed fist and foremost as a shoal draft boat. The hull was optimized for the 4'-3" long fin keel. Can you name any other non-centerboard 34 footer that draws less? They are few. The deep draft keel was designed to fit in the exactly same receiver in the hull, so as you might notice, it is a bit longer at the top of its aft section than appears necessary. The prevailing philosophy of the time at Hunter was that everybody else started with a deep draft and optimized it for race winning performance. The shoal version of the same boat ends up being a poor compromise. For the H-34, 40, 28.5, and 45, all with similar keels, this philosphy was reversed. The shoal version was optimized to perform as well as possible, and then the deep keel was added. That said, H-34 is beamy, as expected in a shoal draft boat, and sails fairly well with the 4'-3" shoal draft keel. But with the deep keel (5'-6" is not really that deep - most 34 fotters of the time had 6' deep keels) the H-34 turns in superior windward performance. Mine passes almost everything its size to weather under the right (<15 knot) conditions. I would be interested in seeing how the shoal H-34 sails against one of the new generation bulb/winglet keel hunters of the same size. Of course, there are lots of other differences, so it might not be a fair comparison.One problem not mentioned, and a big factor to be considered when looking at shoal draft boats, is the draft of the rudder compared to the keel. Spade rudders are vulnerable to damage when grounding. Even the stoutest designs can jam easily, or at worst, break their attachment points and sink the boat. That is one of the main reasons I chose deep draft. The keel is about 1'-3" deeper than the rudder. I am much more likely to ground without damaging the rudder. This vulnerability is the same for most of the wing designs I have seen. In fact, some manufactures have their rudders deeper than the shoal draft keel. That is a major repair waiting to happen.