I am trying to figure out how big of a toggle latch I need to install on the tire swing out. It is holding a 35" tire. I know McMaster has the latches, but what weight rating is enough without it being too big? I saw that Solid Rock has pull pins on their bumpers, is this a part that I can buy and weld on or do I have to make a pull pin? Thanks. And I did search, but found no definate answer regarding latch size.