man, every body has there stories of pulling massive loads with under powered rigs but jeepasaurusrex nailed it why risk it. i was in a terriable crash pulling a jd550 dozer behind a one ton dually it pulled it fine but could not stop worth *censored* and that was in a tri axle goose neck, some punk did not use his blinker and cut me off and i could not stop in time the total haul was 10 miles. i am sure your a great driver but i am positive there are 50 sh**** drivers on your trip. do you know if the trailer has self adujusting brakes? if it does make sure you pull forward and back up about 10 times get them tight. i have only ever seen 1 surge trailer that is self adjusting, you should deffinitly bring a flat head screw driver or brake tool and get them tight. if your adjusters are sized DONT TOW IT

. a great way to check the breaks, is to pull the trailer emergency break away lever and see if you can still pull it on grass or gravel that much wight should hold your truck and spin your tires. just my

. this is a matter of opinion. quick question is there a weigh station near the boat run, it over the scales. if you crash and it weights more then the tag on the door you can get charged with negliget operation of a motor vehicle, not a fun ticket. good luck man