ScubaSixString:Your dive certification is designed so that you may dive with a buddy and in theory not need anyone else. Of course if you're diving in a new area, new conditions, haven't been down in awhile, etc its a good idea to have a group or a DM with you, but BOW doesn't have as one of its limitations "must dive with a group".
That being said, if you are not confient (or your buddy isn't) in diving without a group, don't. I get the impression that pops isnt a diver. So unless you're only planning to dive to about 5 feet, he's useless in an underwater emergency (if he can see you he might be able to move the boat to where you'd surface, but thats about it. I dove the jetties at PC once. Horrible viz from what i remember) A problem that occurs underwater, gets fixed underwater unless there is no other way. Do you have utter confidence in your GF's abilities as well as your own? What does she think?
My girlfriend at first said something along the lines of, well maybe we should stick with a group. I just told her ya know I kind of feel that way too but I think it is just cause we have never dove by ourselves. Really what good is a divemaster in an emergency. If I run out of air Im not gonna swim over to the BM and tug on his fin so that I can show him Im out of air, Im gonna snag my buddies spare air, signal we need ti surface, take her forearm and rise safely with as much stop as we have air for.
After that little explaining she was like, ya thats true, sure lets do it.
What I am also considering is calling a LDS and see if there is a DM that is experienced on the jetty that will accompany us this first time. Maybe for free since my dad will provide the boat ride, that should sooth everybody this first time.
Thing is these jetties is the only place I see my GF and I being able to get regular diving in (5+ times a year). Once they get the road back in order it is 15 minutes drive from my folks place. After we get comfortable with this I plan to do the wrecks in the area.
Maybe Ill check into local dive clubs in the area.