
A large part of what interests me is the seemingly endless number of configurations, and perhaps that's what defeats the kit manufacturers. However, I can easily see many companies jumping in to add resin and PE variations / details, along with wood decking once a basic kit is available.
German modelers will convert a 1:36 civilian fishing boat(the original design inspiration for the military version) - the Elke model from Graupner, and I even found a video of a 1:100 operational model! Here is a grainy image of a scratchbuilt 1:72 version:

At a proto length of 24 meters, a 1:35 version is not unreasonable, and could be designed for easy conversion to RC. Here are two favorite photos from the dozens I found:

This one is quite obviously traveling much faster than the prototype could (14 knots as I recall) :

I just found this site, which has an amazing "half-open" model showing hull construction and full interior.
http://www.klausberges.de/meine-modelle/kriegsfischkutter/








































