Re: Going through locks
The procedures probably vary a little bit, from one place to another.
Here in New Orleans, we have three locks that allow access to and from the ICW. They are heavily used by pushboats/barges, but small boats may use them too. Each has a telephone number posted at either end of the lock and monitors VHF channel 14. I recommend having the VHF radio, because it makes communication much easier when waiting to enter the lock.
First, anyone outside of an enclosed space on the boat must be wearing a CG approved PFD. If there is barge traffic when we go through, we are sequenced to be the last to enter the lock and the first to exit. We are also positioned on the opposite wall of the lock from barges, especially when they are open and carrying any sort of bulk load that could shift and go over the side.
Our locks have rows of pins inset into the walls, which are used to hold vessels up against the them as the water flows in or out. They are not used to "tie-off" to, but serve merely as a place to wrap a line around. The line is held by the "deckhand" and moved to the next one up or down, as the vessel rises or descends. Once the lock has filled or emptied to the appropriate level, the doors on the exit end will open, but the vessels are required to remain secured to the walls until that process is complete.
There really isn't much to passage through a lock - you just have to communicate with the lockmaster and do as you are instructed. The lockmasters are generally friendly and helpful, but can get cranky sometimes when dealing with small boats. I think that happens because they view the locks as being for commercial purposes, rather than for recreational boaters.
One thing to remember, however, is that when locks are busy, wait times for transit can be long. This can also happen if river levels are high and there is a great deal of difference in water height between the two bodies of water involved. In this situation, it takes much longer to pump water in or out of the lock, so the whole process is slowed down. Whatever the reason, it is important to understand boaters can't expect to just show up and be passed through immediately. If there is a need to be in a particular place at a particular time, lock delays must be factored into the overall situation.