Here is an example of a simple but effective engine stand and mount for an airboat. It is built with aluminum, bolted right to the engine which is solid and easy to remove from the boat. The angles attached to the engine extend behind the engine as a good place to install the fuel tank. This mount is currently used on my boats "Blue Bullet" & "Project Tippy".
Material required
Prepare the two angles similar to these pictures, make sure the 4 holes align to the engine to bolt on.

Bend the two flat bars at the end to bolt on to the boat, the top end should be bolted to the angles, make sure to set the engine to a proper angle.

