Originally Posted by INMA
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.
FWIW, that isn't strictly correct: There's plenty of thrust, it just isn't used very well.
The main issue is that in forward gear, prop thrust is pushing the drive leg against the mounting bracket which, in turn, pushes the boat. In reverse, the prop thrust pulls the drive leg away
from the bracket and tries to 'tow' the boat, but the outboard's lifting/locking mechanisms aren't strong enough to withstand the pull and the drive leg tends to pop up instead.
Unless you buy a new outboard with a better locking mechanism, it's something you learn to put up with.