Yes I do! That Hawkeye club
Back in the 1990s I went to Fort Dodge, Iowa to purchase a small load of equipment from a Hawkeye there that was a member, both he and his father. They had Merc 30H, 55H and some old Alky Deflector equipment.
Their newest boat was a C Class Sid and their oldest was a Swift D and they had the one Speedliner runabout. The father passed away and the son suffered a severe head injury with the Sid the first time out and with that they never raced again. He recalled how they would race in any small lake or slew available and had real great times doing it.
When I saw the equipment it had been stored some 30 years at that point and the C Stock Sid hydro was still as it was from the accident with a damaged sponson, front deck and cowl ripped off. Richard, the son had album upon album of racing pictures as keepsakes of those days. At the time I saw it all it was at time of sale of the house as he was moving to Des Moines for good.
Some of that equipment is destined for the Selkirk Marine Museum in particular the Quincy / Merc padded block 3rd port Deflector D and the 44 cube F engines both stamped with NOA crankcase numbers. One engine, the D has a full rotary valve crankshaft in it that looks like someone did a lot of time and development on it. Thanks to Dudley Malone - Central Marine, he managed to come up with a Turner piston to take the place of the only scored one and the engine lives on after have been run once just to see what that crankshaft was all about. It never slowed down very quick as it was about 30% heavier than a stock Merc crank with all the work done on it. The rotary valves were machined brass wedge types with the crankshaft built up and modified to slice in the air/fuel flow.
There was a second crankshaft that was not in any engine that went to a collector in Florida where it now also sits in a Merc Quincy / Merc Alky Deflector engine. Those cranks have been the subject matter of discussions for years past on message boards by their builders who took great pride in their creations and they did work in the engines they were built for.