Outboard mount & transport challenge?

We have an inflatable boat that we use for inshore fishing, snorkelling and exploring while we travel. The setup has worked quite well for us so far we don’t have to tow anything and its fairly light.

We have a Trayon camper that sits on the heavy duty alloy tray with steel sides, most of the time when we are using the boat we remove the camper as it free stands on 4 legs and leave it where we are camping. This allows us if needed to use the ute tray to transport the boat to wherever we want to launch it. The problem I am trying to make work better is related to transporting, mounting and unmounting the outboard motor (26kg).

Currently we transport the motor on the inflatable transom which works fine but has 2 main issues.
1. We have to double handle the motor for transporting. Remove motor from transom, put inflatable on tray, climb onto the tray, then put motor on transom, tie down. When removing, untie, remove motor from transom and put on tray, climb off the tray, put motor off tray, put inflatable on ground, then put motor on transom, fit fuel line, tank etc.
2. The second smaller issue is the transom is slowly getting damaged by the outboard as sometimes the inflatable launching spots are down some fairly rough tracks.

As the outboard motor is awkward to move around I would like to mount and secure this to the tray directly somehow rather than on the inflatable transom. I would only have to do this once and could be left on there for longer periods and even locked on there when camper is off. Unfortunately, I haven’t been able to work out a good way to do this and I am hoping for some ideas on how to best do this or any places in Melbourne that might be able to help us with sorting this.

Our thoughts so far for outboard and workable tray mount locations (red marks on photos to provide context):
1. Create a mount of metal or wood (lighter) that attaches between the tray hurdle and front mount or kick board of tray, then somehow attach the outboard to it.
2. Make some type of padded arm that attaches to the steel sides of the tray that can hold the outboard in place and could be added removed after camper is removed.



Other locations considered: Behind seats on floor of ute would be easy to lift in an out (usually too much stuff in rear seat and don’t really want salt water in the vehicle), on roof rack but its more awkward to do this and sometimes it’s already loaded.

Some design considerations (see photos also): Ideally part or all of the outboard mount could be left on the tray while travelling and would not interfere with the camper when mounted, the construction should be as light as possible as it only needs to hold 26kgs. Ideally it could be used with the full length motor cover we use now to keep clean.

FYI: the inflatable has folding wheels mounted to the transom making it pretty easy to wheel around when needed to launch etc. The outboard when travelling is transported mainly on the floor of the Trayon Camper which has worked really well. The safety gear, rods etc go in the back of the ute and then straight into the inflatable usually just before its launched.