Personally I'd go with an enclosed trailer with a ramp door. Towing a trailer is no issue and the bike would be safe from weather and road debris.
Second option (the one I chose) and much cheaper is an open flatbed trailer such as the 5.5x10 wood decked trailer @ Tractor Supply. This size trailer has a well built designed frame and 15" wheels which was important to me. They sometimes have a sale so watch for that. There are smaller ones for less money but I found this size to be the most versatile for bikes and fits my golf car with a rear seat & foot step where an 8 foot long wouldn't. The smaller trailers are flimsy when compared to the 5.5x10 also.
And third option is something like an Idaho Tote or the like. They're expensive but very convenient since there is no worries backing. Unlike a trailer, the platform is rigid side to side and has swivel wheels that turn like casters on a shopping cart.
There are other companies out there making them for less money too. Try google searching " swivel wheel trailer ". There is also a bunch of YouTube videos on the subject.