1) When a hurricane approaches, no need to worry about extra dock lines or haul-out. Simply put the boat on the trailer at the nearest boat ramp and head inland. Plenty of hotels provide parking for semi-trucks.
2) Ease of boat maintenance while on trailer.
3) Lock closures when Looping. Hire transport to simply move your boat around the closed Lock.
4) Tow the boat to inland lakes and rivers and spend the summer exploring those.
5) Shallow draft.
Land was created to provide a place for boats to visit.