Boat had its first test run on June 19, 2016. Launching it was a little tricky because the bottom is a deep triangle that catches on rocks and mud in shallow water, but it passed without sinking and supported my cellphone camera (which unfortunately was not configured properly so no video was taken!). The propeller is weak in pushing the boat, especially against a mild river current. The tether should be attached to the stern because having the tether connected to the bow makes the boat do unwanted turns too easily. Battery life was very low - about 5 mins - not surprising due to my recycling a 30-y.o. RC system from another toy I had. Should work on improving the propeller and battery life.