Electronics are cheap and don't require skilled assembly to install. The vehicle manufacturers consider a steering lock to be superfluous now that they have chipped "smart" keys and other electronic deterrents. I wouldn't count on a steering lock anyway, so if one was keeping me from flat towing, I'd remove or disable it.
Dropping the driveshaft, at least to me, has to meet three considerations in addition to time and dirt involved:
1. The use: Is the towed vehicle going to be used at every daily stop on a long trip?
2. The vehicle: Can I get under it to accomplish this?
3. Me: Do I have the flexibility, the range of motion, the vision, to do it?
We had an OP who bought a Tacoma as toad for his DP. His logic was that Tacoma was what he wanted to drive, and driveshaft disconnect allowed him to have the truck he wanted and tow it too. It wasn't long before he hated it! Actually traded the truck to get something he wouldn't have to mess with.
Driveshaft Disconnects are as much an Love/Hate device as anything I've seen in RVing. If I wanted to use one, I'd get a used driveshaft. Have it re-conditioned by a professional shop that was installing my disconnect device. I'd probably install the assembly myself, since angles and routing of the control cable seem to cause a lot of the complaints. Keep the OEM shaft. Be able to swap back to sell the truck, or use the truck while the disconnect was being repaired.
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB