I added guide on's and bought pole lights, no more issues!! Screw them other lights!! I have had them all!! I never disconnect before putting in water anymore!
I bought enough wire so to make all connections from the trailer hitch to top of post so no connections go in the water to rot off.
AAAAThis is just a site to show you, I got on ebay cheaper!
http://www.veveinc.com/shop/Pipe-Lig...T-Lights..html