I por-15'ed mine. It took me about 2 days to complete. Por-15 sells a great product called "Metal Ready". You clean the bare metal, dry it (I used a heat gun), apply metal ready to it, let it sit for 10-15 minutes (make sure the metal ready does not dry), hose it off with clean garden hose water, let it dry, apply Por-15. It worked great and it's as touch as nails. I have dentd my skids already but none of the por-15 has been scraped off. It's not cheap, but works great.
f all you plan on doing is the skids, do not buy a gallon container. Once it's opened and exposed to air you have to use it. I bought a "6 pack" and it took three of the 6 (4oz) containers to do both sides of all 4 skids with 2 coats. I just brushed it on with a cheap 1.5" brush.
Also, DO NOT shake the por-15, stir it.