usmc4x4:Would anybody use this?
The devil is in the details. If I had to enter all that to add a dive, not a chance. Defaults are an absolute must. Also, many dives are similar so ability to copy a dive could be a timesaver.
You should add an Other checkbox to the Location Type just to cover any oddball sites out there. For example, I dived an Atlas missile silo, where would that go? Or Bonne Terre mine?
There should be something for entry access, i.e. shore, boat, etc.
What are your plans for dive log display, summaries, and reports?
Have you ever seen or used Scubase?