You will find out soon enough bud, but since you don't know I will give you a heads up,
In areas where the Zebra and Quagga Mussels are invading, the Authorities have a checklist of items to check for water in all trailered boats and I mean they stop you at the ramp approach before you can reach the ramp, just the usual stuff live wells, anchors, water in the hull, even if it is just rain water and the outdrive must be drained as well. The process of decontaminating your boat is a 130+ degree bath for the inside of the hull and any areas that are wet. Now you may wonder why the plug has anything to do with it, well it is presumed that if you haul your boat without a plug then the hull is dry and therefore move on to the next item. If you do show up with the plug in they are supposed to visually inspect the hull, any moisture and they are required to decontaminate, so yes you could show up with the plug in but be prepared to be decontaminated which normally isn't so bad, just a 15-20 minute delay but I can tell you I had one time where they held me off the water for 4 hours because the Hottsy was out of propane and they had to go buy more, never again.