Rob there are a few massive things you could tackle if you wanted to. My ideas are more database intensive than CGI oriented however.... Creating searchable and browsable databases for some "things fishing" would be VERY cool.

An example of what I'm thinking of is: "Fishing spots in California". Imagine an image map that links say marked spots along the Santa Barbara County coastline to lists of and statistics for fish caught there...along with dates, baits used, etc. It would effectively be a graphically oriented web-based person independant fishing log. You also could require valid account status to post to it.

That would be very cool IMHO. If you like this idea but want help with it, I might be able to help out starting this summer...but don't hold me to it! =P