It's not a bad idea to take some dunnage up for crossing that stream in the spring. Rocks and logs are scarce close-by. A few short 4x4 blocks, broken cinder block and paver pieces can make a difference.
Great shooting spot and usually plenty of room, I think the good shooters outnumber the bad as far as safe firearm practices, courtesy and common sense goes, but there are exceptions.
If you haul it in, haul it out and have a safe time. Harris park might be a prime target for the BLM, or whoever, to shut down for good. Respect the rules and then some.