I believe the park closes at 10:00 PM, so 8-10 PM should be OK. Once the park is closed, the the Police will probably tell you leave, as I see them regularly go through the park at closing time
and ask people to leave. I haven't seen them write tickets to anyone who is cooperating... that... of course, is for people using the part of fishing off of the boat launch docks. I don't normally see anyone wading.
On that note, I have a small boat that I sometimes launch at Gravely Point, and the number of people near the ramp sometimes scares me. I've seen many people fishing on the docks (and I don't want to cut their lines with my boat), and I've seen little children running around and playing, sometimes in the part of the road that leads to the boat ramp, and sometimes playing in front of the ramp or in the water at the launch.
I'm always extra careful, drive really slowly, and back up to the water with my rear window down (so I can hear) and go very slowly... but the bottom line is that visibility is limited, and I pray that no-one gets hurt accidentally... not only for their sake, but also because of the state of lawyers in this country ("have you been hurt... you need to get paid). I often get out of the truck before I start backing up, just to be sure that the area is clear, and have sometimes delayed launching until children are clear from the water.
Maybe a little off-topic, but I guess my advice to anyone wading at gravely point would be to respectful of the boat traffic at the launch, and the airport security concerns.
With that said, anyone wanna fish one evening on that area or the potomac off of a boat. I'm contemplating going out this evening or tomorrow evening. I have an 18 ft fish and ski, with an electric trolling motor that sometimes works and sometimes acts up.
I broke my fly rod (and was never very good at it!) so I'll be using an ultra-light spinning rod, but I'd be happy to have a guest.
P.M. me with your email and phone if interested, and maybe we can make something work. P.S. -- I'm still learning how and where to catch fish on the river, so I've go the boat.
Hopefully you'll bring the expertise. Any kind of fish is fine with me (I catch and release). I just enjoy being out on the river, and after almost a decade of boating on the river and supposedly
"fishing" I figured it's about time that I finally leared where and how to actually "catch" fish too!
Sincerely,
-Philip