Pods are great in shallow or muddy water. They will assist in keeping the stern up but as noted will make trimming the boat with an outboard interesting. Pods are probably not the best idea in an open/rough water area. Check out Beavertail's site and instructions.
http://www.explorebeavertail.com/...ions/Pods-WeldOn.pdf
I have used three different long tail motors with slick bottom boats. I installed pods on one of my boats, and noticed it did float higher. The down side was the bow would tend to stay down and take on some water in rough weather, and the boat was harder to turn a higher speeds.
Adding up the cost of the pods, I would recommend trading your boat for a longer model rather than installing pods!
Miller