If you’d blow with a leaf blower or something to the front of the boat, the boat might actually go backwards of there’s enough force. The leaf blower is basically pushing the air forwards, therefore it’s also pushing itself backwards. Some go this will probably be cancelled by blowing against the sail, but some air will also pass around it.
If you could scale the strength of blowing all the way up this would actually work though no?
For example, if you were in a light kayak with a mini sail and had a high powered leaf blower pointing at the sail, would that work?
If you’d blow with a leaf blower or something to the front of the boat, the boat might actually go backwards of there’s enough force. The leaf blower is basically pushing the air forwards, therefore it’s also pushing itself backwards. Some go this will probably be cancelled by blowing against the sail, but some air will also pass around it.