This is just a suggestion, it might get you excited again, but why not look at a cub Kamparoo or Sprint, these are designed to be towed by a small car or motorbike, they open up to a pretty good size and are very light.
From the CUB Website
The Kamparoo SPRINT is ideal for towing behind motorcycles and small cars, or for people who enjoy the independence of traveling on their own.
this model does not come with the Ezy Wind system, because of its light weight and simplicity to open and close.
Available in Touring Model only.
Body length: 1.9m (6'5")
Open Length: 3.75m (12'8")
Width: 1.22m (4')
Tyres: 8 inch
Bed Size: 2m x 1.22 (6'3" x 4') please click the following link for more pictures of the Sprint range.
VACATIONER We also offer a very basic model in this range called a KAMPAROO VACATIONER, which is ideal for one or two people on the move or just for the short trips away and of course, it is very light and low to tow, making this a real fuel miser. It includes a bed and spare wheel plus jockey wheel. Everything else
Body length..2.2m (7’2”)
Open Length...4.3m (14’3”)
Towing Height (Closed)...1.2M (3’10”)
Weight (+ or - 5%) ...350kg
Just another option PJ.