Aside from the Goodyear Endurance (I've just had bad experiences with the Marathons) what trailer tires is everyone using these days for tandem axle boat trailers? I bought Hartland tires from discount tire the last time for my 2003 Stratos but I sold that boat. I have a 2007 Triton TR21X now and done had a blowout. They were Goodyear Marathons. Thanks