carpet cleaning recommendations?

the carpet in my boat is starting to look a little "weathered". I was planning to get the whole boat detailed, but thought I might give it a try to clean it up myself. Any recommendations for a good carpet cleaner, or carpet cleaning strategy? I want to make sure that no soap starts coming up later when the carpet gets wet. I had that problem in my old boat from trying to clean up a spot one time. Also, my carpet is not snap-in.

any thoughts/recommendations are appreciated...