Ronco tanks and hold-downs
I agree with Jim, you need to block the tank from sideways movement in addition to using straps. I suggest using strips of 3/4" thick Starboard or similar material that are screwed to the floor and butted up tightly against the tank (screw them in place before putting the tank in).For the benefit of others who are also considering a Ronco tank and wondering about hold-down options, please be aware that, if you ask, Ronco will weld hold-down tabs on to your tank when you order it (along with the other customization you will request of them). Just tell them exactly what you want. When I ordered the replacement tank for my Hunter 37.5, I had Ronco weld on 1/2" thick poly tabs around the bottom of the tank that replicated the aluminum tabs on the original aluminum tank that I was replacing. Makes installation a snap--just screw the tabs to the floor or stringers and your tank is as well-fastened as the original (assuming that was the way it was fastened to begin with). Ronco charged me $5.00 per tab, but was worth it in not having to design and shop for parts for a new fastening system.