lC&J Paranormal

I'm going back to Galveston at the end of the month for a couple of days and there is a very old Cemetery there that I want to do some EVPs in. It's open all the time so I shouldn't have any problems just walking in. I'm wondering though what wold be the best way to approach this? Go in with my digital recorder and just walk around asking questions or pick a few very old gravesites and try those? Any ideas would be appreciated.