I'm an electrical engineer so I know what I'm talking about lol there are some applications in which removing the ground is a terrible idea (such as expensive/sensitive equipment) but most of the time it is fine. In this case I'm assuming your flexwatt has 2 prong plugs. If this is the case I would get an extension cable like this: http://m.alibaba.com/product-gs/3158...ower_Cord.html
Or break off the ground of a power strip if you need more outlets. They also make 3 prong to 2 prong adapters like this one: http://www.summitsource.com/groundin...00-p-8800.html
Hope this helps