I remember my buddy telling me at the final weigh in the tunnel rule would be changed. Same thing happened in the Elites years ago. It was jet boats back then. If memory serves me correctly, Roland brought a jet to a tournament and cleaned house. A bunch of the competitors cried that they didn't have jet rigs.
Ott, James Watson, Drew Benton, Skylar Hamilton and Bryant Ailor all had tunnels at the 2017 Northern Open on Douglas. The guys that either didn't have a tunnel, or access to one, complained enough to get the rules changed. Some were complaining during the weigh ins. Heck, Ott's rig was built with B.A.S.S. knowledge and approval, he said so on stage. I hate that those guys made that large an outlay of cash, with B.A.S.S. approval, only to have the rules changed after the fact.
Bassaholic, your right those boats are slow and get horrible fuel mileage. It is a huge gamble to run one. Ask Drew Benton about lower units. A large portion of his is still in the river. Hit a huge rock on the last day.
Keeper, I'm not trying to be argumentative. In any tournament, you can run from the dam, as far up river as you can go unless otherwise noted. It really is all one body of water, by the rules. You can get a glass boat pretty far up in that river if they are really pushing water. Should it be off limits in a glass rig? In some tournaments you can "lock through" and truly go to a different body of water. I have an issue with that one, but rules are rules. The boat that Ott used in 2014 was an 18 footer with a 90. He sold it. His new one is a 17 footer with a 60. Lighter boat, smaller outbound, better mileage.
BassNJake, To my understanding, Hamilton's lower unit went south on day one. He had to change boats.