Nice to meet you, Scott. Always good to hear from someone in my area.
I wasn't sure what you meant at first actually, but thanks for explaining. Unfortunately, I don't think my town has handicapped picnic tables. Even if there are a few, they're likely used for indoor purposes only in certain businesses, and they surely won't allow someone to be jumping around on them.
But yeah, having a bench on both sides of the table makes it that much harder to clear. That's a lot of horizontal distance to cover, and you'd already have to be moving quite fast. My fears are that my feet would clip either the bench on the other side, or the edge of the table. Then my knees would hit either the ground, or the top of the other bench, both of which would hurt A LOT.
I can definitely attest to your other point, though. Bergen county is just not very obstacle dense. I think even my club's former president might agree. According to him, there are a few good spots in Bergen county, but they're far between. It's not like you could just walk/bike a few minutes from one spot to the next. You'd have to drive quite a few miles in between these spots. Chances are, maybe one lives closer to one of these spots, but too far to practically train at any of the others.
Everyone's scattered about, too. I've noticed there are a handful of individuals in Bergen county interested in parkour, but we all live way out in different towns. And with everyone having such different crazy and busy schedules, trying to organize a steady group that dedicatedly meets and trains regularly would be a near impossibility. Tragic. Maybe parkour is really only a pipe dream for an area like this.
I'm still considering building my own vault box in the future. I'm basing it from that PDF diagram of a vault box example from sfparkour.com. I'll have to wait until next spring to buy the materials, however, since I'm trying to save most of my money for school. It's high time I have something more proper to vault over. These picnic tables just won't do it for me anymore.