This video demonstrates the common errors. Lots of hustle, all wrong. The helmsman is is using way too much power and speed. No one in the group understands how to use the lines to facilitate getting the boat properly against the dock.

https://www.youtube.com/watch?v=bAnfcAxFelw

Once near the dock only one spring from amidships should have been used forward or aft to bring the boat to the dock. The person hanging his legs over the side should not be there. The person standing and tossing random lines is lucky she did not end up in the water between the boat and the dock.