I was earlier going to post that the dinghy thingy is one of life's vexing problems when it comes to mating them to a small cruising boat.
Erster's point about scale makes sense; a lot of the solutions being proposed work fine on a slightly bigger boat, maybe not as attractive on a smaller one.
I would certainly do a little more experimenting with towing, bearing in mind Tom's warning that some boats tow better than others. The hard bottom rubber boats do pretty well in this regard, maybe because they are so buoyant (and if they fill a bit, who cares?) but you might try something like Alan has pictured just to see if it will work, keeping in mind the notion of various harnesses to put the towed boat where you want it. I concur with Mike's point about how clumsy that can be if you end up having to tow two separate boats home at the end of a weekend. However, here where distances are long, it is very, very common to see small boats being towed hundreds of miles, though they are more rarely beautiful handmade sweethearts like yours.
Meanwhile I will try to add to Erster's picture gallery in the next day or two. Have I said how sweet a (set of) boats you have there? It's easy to see the appeal!