Michigan allows 65' max also but it's for the licensed in-tow items rig not for the cargo on the licensed trailer length as it can extend another up to 3' on the rear before needing red flags attacked daytime and an oversized load sign attached or working running/stop/turn lights on the rear with other restrictions. As for example: With a boat longer than the trailer which meets the entire 65' max, up to 3 feet of the outboard motor extending or the I/O outdrive in trailering position. A total of 68 feet of rig length. I learned this when talking to a state police captain. Don't know if other states have this same definition though. Only problem we ever had was in the Florida keys on US-1.
We were stopped in 1993 as I remember and the sheriff used his measuring wheel from his trunk to measure us twice. Asked if we knew how long we were and I said 64'11" and the Florida max is 65 feet. stood for a couple minutes and said "have a nice day", got back in his vehicle did a "U" turn on the bridge and away he went. Did even notice my leased company truck had expired plates as the leasing company had forgotten to send them to us and I hadn't noticed it. Called the lease company after the sheriff left and they sent the new plates to us in overnight mail. No other problems ever even when towing thru Georgia, Alabama, or Florida as they had a couple years later banned double towing.
Agree, you take your chances and what your state of registration laws are seems to make a difference we have certainly noticed and heard from others double towing thru some of these banning states s we see lots of double RV rig tows when in Florida.
