The current requirement is for #8 wire or larger, insulated or uninsulated. It's pretty tough to get insulated wire through all the connections required on a metal wall pool. The code is usually interpreted as one bonding point on each panel section, so above grounds are usually done every bottom rail section. I like to see the uprights done as well.

My recommendation is to go to an electrical supply store for the bonding clamps, although you can probably get a better deal on the wire at a homecenter. The homecenter will never have enough clamps in stock. I like to use self drilling screws for convenience. Make sure everything metal within 5 feet of the pool or that touches or could touch the water is connected to this wire. Also the pump motor, any heaters, slide bases, metal fence, railings ladders etc.. No ground rod is required.

The code for pools was changed quite a bit in the 2005 NEC, and is going to be changed more in 2008. Mostly for clarification, although the changes for concrete pools were significant.