Rainbowbridge
Keeper of San Juan Secrets
Great info here...my 2 cents, as I've towed that zillions of times.........check hubs/tires/brakes on trailer...have a spare for the trailer. Make sure boat is well strapped to trailer...you don't want it moving.....and the big one....go slow......50 MPH in some spots is safe. I was towing 10K lbs and would put flashers on at times to hopefully get the attention of the other texting 18 YO drivers 
Oh, I'd pray for divine protection, too. That helps, IMHO....

Oh, I'd pray for divine protection, too. That helps, IMHO....