Constant Mesh Transmission....
This is not a new idea by any means. I've seen this type of trailering solution since the 80s and it may be older than that! The problem has been the CMT and the fact that your tranny is spinning without the oil being pumped by the engine to keep it cool and lubricated. I am not an expert by any means but this is what has been explained to me in the past. You're best bet in this situation is to break your chain and bring a $4 master link and tools with you wherever you are going if you must transport this way. FWIW I saw an ad for a 4X6 beaver tail trailer for $359 a few weeks ago...