I'm not sure if it's a solution but would it be possible to have a garage door specialist install a spring and cable system similar to those used in regular garage doors? Not sure if there's room or structurally feasibility. If you ever tried to open a home garage without the mechanism you would find out how effective they are.
At some point during every day you suddenly realize nothing else productive is going to happen the rest of that day. For me, it usually occurs around 9 am.
Vengeance 25V (the Harley needed a home)