Here is something. This is a club members airplane. He did this the way I'm getting ready to tell you: http://www.mempropbusters.com/images...0underside.jpg

You take a spray bottle and fill it with soapy water. You spray it on the covering, and place the covering where you need it. Once it is set, you take a sponge, and squeegie out the water. Let it sit for about 24 hours so let the rest of the water evaporate. Then, take some of the sealing stuff (trim solvent I think)that they make for covering and seal the edges. I've used clear fingernail polish without any problems, but it does flex, so it can break.