Re: To license a trailer??
Go ahead and pay the license fee for your trailer if the boat is close. If you head for the fishing grounds and throw in ice chest, tackle, rods, or whatever you stand to go over the weight limit. As stated, if the troopers think you may be over, they can require you to weigh it. If in doubt, go to any scales you see and weigh the thing yourself. It's free.
Make sure brain is engaged before putting mouth in gear...