That one was kind of a hybrid. The mount kicked up for inserting the blade and then they swing down with a single set pin at the bottom of the bracket (which can also be a sheer pin). I've done cassette styles as well but they are a more complex build and heavier.
Must be great to get her out on the water. That rudder hardware look dinky compared to my 31ft Azzura 310.... what is the diameter? Doing a steady 19k we hit a sunfish or such and bend the 1" solid rudder pin.