I don't have a welder either so that's no excuse. Do you own an angle grinder? I sought out someone on a local 4x4 board who does 4x4 modding on the side. I bought the steel myself, cut it up with my $15 angle grinder, and brought it to him for welding. And my rockers are held together with the bed liner that covers them. They are mushy to the touch. I totally understand the apathy that comes with our rusted out trucks. I used to think that way too. And I even own that southern truck o' the future. But I do NOT regret the rocker guards. They are frickin' awesome! I can drop the truck on rocks and logs that would otherwise have made it tough to ever open my door again. Plus it will help hold my truck together longer since it adds structural support to all the rust.
Do it! You won't regret it. :D