Mounting outboard on Jackaroo...

Nope, not looking to go amphibious, just looking for suggestions of how to carry a small outboard on/in my Jackaroo to get from A to B.

I have recently aquired a 3m Zodiac that I plan to take on trips when I can't or don't want to tow the trailered boat. I like the idea of this as it allows me to be a bit more flexible on destination choice and still able to get out on the water.

Anyway, the plan is to put the boat/floor etc. on the roof rack (weighs 38Kg all up but can be separated into parts), the fuel tank can go up here as well...but what to do with the outboard? The motor in question is an 8hp Yamaha, weighing in at 28Kg.

It could feasibly go on the roofrack with the boat, however it's a bit awkward to lift and I'm worried it might get damaged getting it up and down. Another consideration is that outboards are meant to be transported with the gearcase always lower than the powerhead. Rear cargo space is fairly limited due to dog/luggage etc. FYI.

At present I have a 6mm stainless plate fixed to my towbar tongue (see pic in gallery), thinking of mounting something to this, but not sure just yet of how to go about it. It's fixed with 2 x 1/2" U bolts.

Anyway, if anyone has any suggestions they think might work (or not work even), would love to here them.

Thanks

Gav