A well constructed fiberglass hull is just as light (see specifications), and easier to maintain and repair than an aluminum hull. You must also beware of corrosion and electrolysis, the added difficulties of welded repairs, and poor adhesion of paint and glue when using an aluminum hull.

The Performance Rigid Roll-up is designed with ease of storage and a low overall weight in mind. This model can be rolled up and stored with the floor system still inside the boat. Assembly is simply to inflate the boat. No need for a flat surface and it can even be assembled hanging from the halyard.

The fully Collapsible models offer a more rigid floor system than the roll up model but do so with some drawbacks. The floor system is typically made of wood which will eventually require some maintenance. Also, the assembly of the boat is increased because the boards must be removed every time the boat is collapsed.
The horsepower rating is typically higher for these models than roll-ups.
Beware of boats with the points on the wrong end!