Too bad you couldn't find the sails as you seemed to want them.
But the real deal here is that you've got the Trinka. Of all the poor choices out there for dinks you've got a real gem. Before I go any further I should admit I've not even seen one in the flesh
.. did I say that? or operate one ... they just look so perfect and no one's ever said anything bad about them. They definitely look perfect to me. Mark (Coot) has one but I think he only rows his. And actually there are even better boats for rowing but a perfect balance between rowing (FD hull) and powering (SD hull) is not often seen in a dink. Here's my yellow dinghy .. probably temporally to be replaced by a big canoe.
dimer2 I agree the little Honda is a great slow speed dink engine but I prefer quietness to the advantages of air cooling. Every time I flush my 2hp Yamadog 2 stroke I think .. Hmmmm wouldn't have to do this if I had one of those Hondas. And the little Yamaha isn't much quieter than the Honda. And being quiet at idle has little value. Same weight though and I can handle it upside down, sideways any direction imaginable. Not much difference though until you get to the water cooled 4 strokes. For my wife to hand me an OB from the boat to me in the dink 30lbs seems to be about the limit.
But Pac Mule how to ship it, launch it and secure it aboard the mother craft is probably the most vexing question I've ever faced. A very lightweight crane and secure on top seems the best answer but to find one inexpensive and light is not easy. I bought a roll-up rubber duckie and used it for about a year and found it too heavy also. And not foreseen was that due to it's width safety was questionable on Willy's rooftop. I was going to get a 32lb (wo the transom) version but to solve the dink width problem I'd need to store it sideways on the rooftop. I may put my big yellow canoe (kevlar) on the roof to see how it would work and how stupid it would look. But solutions to your question is like trying to drive nails into Black Walnut w/o pilot holes. Solutions for dinghys on a small boat are very difficult and rarely good and never perfect. Turned up on the swim step (if you have one) is a very good solution but I could'nt stand the visual of that. I like to sit in a folding chair on the aft deck enjoying the view in harbor or underway and on those (frequent) occasions I don't want the view to be blocked nor do I want to investigate the bilges of the dink .. at those times. I created a good one for my 26' Albin but like w davits required more length and moorage costs.