Doug,
Sounds like a great idea to go with the tried and true manual method, simple in most cases is better. I made a swivel hinge to mount the tv in the basement compartment. One thing I found out, the tv will not hang straight down because of the offset of the mount hinges and rear tv mounting so I used a bolt for the hinge pin with a lock nut and I can adjust the resistance by just snugging up the bolt. So I would suggest using long bolts as hinge pins and snug them up to a resistance and also keep them from rattling. One you latch side I would suggest a latch on each side to eliminate any chance of torquing of the tv while traveling and also better support.
Food for thought, look forward to see the finished product.