The standard propellers on the Tohatsu/Nissan/Mercury outboards are next to useless in reverse. Their lack of thrust makes stopping the hull or moving the hull quickly in confined spaces an issue.
I generally back into any jetty or dock so I can use the forward thrust to escape trouble if something goes wrong.
I did this modification some time ago and the outboard's reverse thrust is no excellent.
• View topic - Making a Mercury high thrust propeller perform in reverse.
I had a keel boat with an outboard on the stern, I had a piece of string on the gear lever so I could select forward without the acrobatics over the push-pit.
Some people talk about drifting into docks etc. that has issues because you are not really in control while your drifting, you need flow over the rudder and keel to keep steerage.
One good habit is stop the hull away from the dock before moving into the dock, it leaves less chance of mistaking speed or currents once your close to the dock.
Always have the dock lines ready before you approach the dock.