Indoor Docks
Truckers definitely don't like them. I have seen many trailer doors leaning up against a wall instead of where they started. Hinges get broken. Trailers get scratched. Backing into a place that you can't see isn't easy. There are a few “old dog” tricks combined with basic principles that make it easier.
G.O.A.L. (get out and look) is always important. Scout out the spot that you are backing into. What 
are the obstacles? Is there anything hanging too low? Most door are wide enough for 2 trailers. Is the trailer next to you straight? If it is use it to make sure that you are straight too. Many indoor docks have yellow lines. Some docks are equipped with lights. Check to see where your trailer needs to be in relation to those lights. Use the tools and check points to help guide your trailer.
Make sure that your mirrors are perfectly clear and roll your windows down. Clean the mirrors again before you back up. If possible leave your trailer doors closed until you get inside the building. Close them again before you exit the outside dock door. You might not be able have the clearance to do this with both doors. Can you do it with one? Use a spotter if you can. There is that time when the cab is in the sunlight and the trailer is in the dark. It is almost impossible to see. Leaving your marker lights on will help.
My favorite “old dog” trick is to light my flashlight and place it on the dock. I put it about a foot from where the drivers side of my trailer needs to hit the dock. Other drivers seem to get a kick out of this one. I have had drivers laugh when they see me do this. Then they get their flashlight out and do the same thing. This can be a good “brotherhood” moment. It has helped open up discussions with other drivers. Many a conversation has started with my flashlight trick.
Be careful pulling out. I have seen drivers take their time backing into a spot. They are careful. They may get out several times and look when they get to that light/dark spot when it is hard to see. Then on the way out they rip a door off.
I still struggle with indoor docks. Most OTR drivers do. Sometimes I think that those that don't struggle are 
the ones who rip doors off. The old biblical phrase applies. It is better to humble yourself, and be made great then to boast and be made humble. Who knew that it applies to indoor docks? If you have any “old dog” tricks let me know. Are there new tricks out there that you could teach me? Let me know, because I still struggle with indoor docks.