Re: Moving a gutted boat
does the boat have a title, if not, then sawzall and a garbage can. as has been stated many times in this thread and many more. no title, no registration. no registration, no ownership.
you mention that you are fixing the boat for a relative, while this can be a noble endeavor, I do caution you. The last time I did that, I made it clear that they were to pay for materials, incidentals, and at least $10 per hour for the labor. It was agreed upon. in a bit over a month I had $3k of my money and 80 hours of labor invested in a boat that my relative had no intention on paying.
now on to the assumption that the boat has some sentimental value, will not cause family drama, and you really want to move it 5 hours.
if the cap is off, re-install the cap. This is a must. and dont just set it on, or we will be reading about a boat cap coming off in traffic. use all the screws. This is to transport the cap, ensure the hull doesnt flex and buckle from wind load and trailer loading
brace the boat on the trailer with thru-bolted 2x6's, and 2x4's guessing about $100 in wood, screws, and bolts at a minimum. This is to ensure the boat (now without stringers, deck and other hull supports) is supported.
if its 19' and shorter buy 2 rolls of duct tape and at least 3 bags of play sand. this will be to adjust the trailer tongue weight. you need 10% of the towed load as tongue weight to tow properly, and since the boat is gutted, its much lighter now
if its longer than 24', you will need more duct tape and play sand.
make sure the trailer lights work, make sure the bearings are ok. since you have 2 5 hour drives, and a bit of prep time securing the boat, I suggest either a really early start to the day, or make it a 2 day affair.