When in a hogline it is a very good idea to have an anchor bouy for three reasons: your hogline buddies won't want to pull their lines out for extended periods of time while your fish runs up and down the hogline, your fish might decide that it liked the taste of saltwater better and head lickity-split downriver, or something coming downstream (tug, log, etc) may require you to drop out of the hogline in a hurry.

Other things to keep in mind:

• Before you anchor, look at where everyone else's anchor lines lead to and try not to cross those lines
• Ask the permission of the boats owners before you go sliding down between them. They might be buddies who want to stay together
• Loud music or loud, drunken boaters are seldom welcome
• When someone has a fish on next to you, reel up during the brief time it will take them to either boat the fish or drop outta the hogline
• When they do drop out of the hogline, help them come back in gracefully

I spent a lotta time as a kid in a hog line, and mostly there was a lot of comradery and friendships to be made out there. As long as everyone out there understands that it's a nice way to spend the day and doesn't get all crappy about it, the hogline experience can be a great time for all.