You can sail a very large boat by yourself, 50' 60', not out of the question.
It's the docking, anchoring and picking up mooring balls that get real tricky alone.
Lots & lots of people sail very large boats double handed so no need for a 'crew'. The second person aboard makes a huge difference.
If you have no boat handling experience, you will have a VERY difficult time with a 41', especially alone.