Rollercoasters tend to be easier for launch and recovery. However, some people prefer the overall support provided by bunks. We find that the bunked trailer requires a greater depth for launching. On the plus side, a bunked trailers is lower in cost generally.
When considering which size trailer you require, consider the following: It is important to know the weight of your boat and an accurate measurement from bow eye to transom.
Bunked trailer with Guide docking bars made for flat bottomed Aluminium. Boats used by the Environment Agency