Leaf blower would work if aimed up at a sharp angle across front of sail. This would create the low pressure needed to suck forward but the reverse force of the blower itself would be diffused by the inability to push the boat down into the water. More resistance of water and the boat goes forward in path of least resistance.....no, I am not saying this is what i am doing this weekend. It is blowing like snot and I don't need one.