I recall we tossed around the idea of a sort of legal 50 dT jump-1 craft based on High Guard rules, drawing on the jump field cables described in Supplement 9 for the "Jump Ship" to give it the ability to extend its volume to 100 dT. Basically we made a module for the cutter that gave it a jump drive, jump fuel, computer and a 10 dT bridge addition to extend the bridge to 20 dTons. At TL15 it only had 7 1/2 dTons available for passengers, crew, and whatever volume the field cables needed, but it worked as a jump capable small craft that a warship could carry for emergencies. One could presumably extend the cables over whatever you wanted to take in tow, up to about 50 dTons, so it could go quite a distance if you took along a 50 dTon fuel tank to refuel from, albeit slowly. Or, tow another cutter along. Can't find the post where we discussed it.
I do want to be clear that, for my purposes, ships under 100 tons with jump drives do not need to be "inflated" to 100 tons nor do their bridges need to be to 20 tons (a small craft with a normal bridge per CT:HG is sufficient).