Great gift from your wife! I think if you look at some of the boats used in for example the Everglades challenge, you can get some great ideas. I googled images for "boats used in the everglades challenge", lots of cools stuff came up.
Somewhat on topic, somewhat not as this is really a different sport than what is typical for this forum.. The Hobie TI is a little removed from your Pigmy kayak but for about half the year, the Hobie TI is mostly what I sail. Its a mediocre sailboat in a lot of conditions but what sets it apart is the Hobie Mirage flipper drive and enormous easy to use wind range made possible by the Tri and the infinitely reef-able sail. Its too heavy to car top so you need a trailer but its light enough to where you can launch with a trailer and not get the trailer hubs wet. Also a good trailer boat because the setup time is well under 10 minutes so you dont mind doing it often. It has two seats and my wife goes with me every once in a while but I mostly sail it solo from the rear seat. The TI is a down wind master sailed from the rear seat. In a lower wind, lots of sailing in the 4 to 6 knt range and my peak speed has been 11.73 knots (watching a chart plotter readout). I use it mostly to do what I call "water hikes" where you have some destination in mind and it works nice for this because the TI can handle some really wild wind with just a small corner of sail out and you can pedal it of the wind drops. Wife likes to pedal all the time just for the exercise. It can be a wet ride especially for the person in the front seat and we always carry and often use kayak spray gear.
Lots of good video on the internet of these.. here is a recent outing we did on the lower Colorado river where we put in about 20 miles with a destination in mind
The lack of boom was mentioned which is both a good and bad thing. The bad is that the sail shape is poor going down wind. I like to experiment so have been trying "whisker pole" setup with a "barber hauler" loop using the top section of a windsurfing mast. Definitely helps down wind but you can also just go purchase a spinnaker kit for this boat. I have not yet gone the spinnaker route.. but have had some fun messing with the windsurfing mast boom. You need to be able to disconnect the boom in order to reef the sail so I took some funky video of my latest attempt to solve that problem.
