Boat Ramp Etiquette

[patchino22]

I was reading a post just a second ago about a fellas experience at the boat ramp and it made me think about a situation I encountered at the boat ramp this past weekend. I wanted to get everyones take on what the proper ettiquete of putting in is. What I am referring to is when you are lined up behind other vehicles and waiting to put the boat in the water. Who has the right of way? Allow me to present a scenario.....

There are four slips to put boats in. Some boats are coming in off the water.....others are lined up to put their boats in the water. 3 slips are occupied while there is 1 slip with a guy and a boat waiting for his buddy to pull up the trailer. I am the first truck in line to put my boat in the water. Do I wait for one of the 3 occupied slips to open up? Or do I pull in and put my boat in the slip where the guy and the boat are waiting for the trailer (boat is secured at the end of the dock and out of the way, there are several vehicles lined up and waiting)?

I havent been in this situation too many times and didnt really know what the proper thing to do was......so I put my boat in the slip where the guy and the boat were waiting for the trailer........they were a little irritated. But my thought was that the sooner I put in, the sooner he would be able to get his boat out. What's everyones take on this? Is there a rule of thumb to follow?