Bridge Manipulator

[Robogineer1649]

I have seen three types of bridge manipulators triangles like 846's robot, i have seen just straight metal pushing down on the bridge like 233's robot, and i have seen wheels like our robot 1649's robot. I was wondering what type of bridge actuator you used if I missed it and which bridge manipulator worked the best. I know that all three types were able to get the bridge down but I want to hear your pros and cons for each bridge.

I like the triangle manipulators because you don't have to push down on the bridge you can just lower the manipulator and drive up and over.