I purchased a Torquedo electric outboard recently and so far have been very pleased with it. I think 6 hours at half throttle is optimistic, more like 4 hours but so far I have not run it flat. Pros and cons are as you said, the great thing is that Jean can use it. She often had difficulty starting the old 2 stroke and when the battery is dismounted she can lift the three components herself if necessary. Great thing to have but a little expensive.