Just got my 206 last fall so I only used it once. Just got it back in the water this weekend. The ball valve in the engine compartment for the trick tank was closed, but while driving around I noticed the trick tank was showing about 1/2 full. I verified the valve under the engine was closed but then noticed the switch under the drivers console was open. I closed it and no more water went in the tank. I did verify visually the tank is 1/2 full. Do both valves have to be closed to make sure no water enters the tank? The switch under the drivers seat is after the ball valve so I thought if the ball valve was closed the other switch valve wouldnt need to be closed as well. Any thoughts or experience on this? Also whats the best way to get water out of the tank if the empty pump has stopped working.