I don't recall where I bought the hooks, but they are called "weld on" grab hooks. They are flat, but beveled, on the bottom and designed to be welded on.
My dad has been a professional welder for over 45 years. He was definitely not the best with patience for teaching his son to weld, but he certainly knows what he is doing. I've been a 'weekend' welder for about 25 years now and an finally starting to do things halfway right according to my dad. /forums/images/graemlins/crazy.gif At one point I had all the different rods memorized and their tensile strength as well as their differences. There definitely is a reason to have all the assorted rods. They all have their place. However, the most basic thing I always end up going by is to simply make sure that my weld is at least as strong as the base material I'm welding. In other words, it makes no sense to have a weld that will take 125,000 psi to break when the base material will break at 20,000 psi. Using that for a guide, I almost always just grab 6013 rods.
I don't know if I phrased that right, but hopefully it makes sense. I've gotten lazy lately and almost always use my MIG welder. If I'm dealing with clean material to begin with, it is very easy to produce nice looking high quality welds just by using the settings chart on the machine. It's only when welding stuff that is nasty or outside that I break out the old (not really old, I bought a nice Hobart 2 years ago) buzz box. I can put my generator and Hobart in the back of my RTV and get to most places for an on the job fix if need be. But, I'd prefer to be lazy and just lay out the nice caulk looking welds with the MillerMatic 251 I have. /forums/images/graemlins/tongue.gif
Lately I've been practicing with my TIG welding on aluminum. As I've mentioned before, my dad can weld an aluminum soda pop can back together. That's tough to do! I always just tell him that there isn't much of a call for welding broken soda cans. /forums/images/graemlins/wink.gif