I'm in the market for a rtt, but I'm a bit hesitant on pulling the trigger on one at the moment. I'm torn btw the kukenam and Autana  (ruggedized versions of both) but I'm mainly undecided  because I am
unsure of how  I want to mount it to the truck. 
Figure the ability to lift it up and down so it is beneath the truck can when driving is ideal. However I want to keep the my tonneau cover, so it is secure storage for my scuba diving kit as well.  Access to the cargo is already sorted as I have a cargo slide, best purchase I've ever made for my truck, hands down. 
Any thoughts on how to do this?  I had original thought of using wreckdivers idea with the Yakima racks/control towers and I may still, I'm just not sure if it is the best option. Sigh. could use a bit of help in this one 
Regards
Steve 
I suffer from fat finger syndrome and a tiny keyboard on an iPhone. So I apologize for the  typos and misspellings.