Weekend trip to Zernoseky lake

I've taken some days off from work and extended the weekend. We decided to go to nearby lakes on the Labe river called Zernoseky. It's a and an old sand pit connected with Labe. There are nice islands with sand beaches which is great for the kids. Weather was nice and the water around 26 °C.

We used the public slip in the Lovosice town and parked the car and trailer in the near sailing yacht club where are really great people.
The plan was straight, launch the boat, have some fun and retrieve the boat back to the trailer. However, when we checked the slip it turned out to be very gradual so I had to unhook the trailer and that was my mistake. Our trailer has the axles with "cool" feature called back-o-matic, in a translation that means it simply cannot brake in reverse, so when you pull the parking brake, it does not work when the trailer in on the slope heading backwards (Updated 12/1/2015 - I've found that the hand brake works even with the back-o-matic!) I blocked the wheels with that funny plastic blocks, but the slippery rocks on the slip simply cannot hold it and the trailer with the boat just runs away into the water.
Luckily the trailer stopped just after the boat was fully in the water. That was great lesson how NOT to do it again. I have to tie the rope first before unhooking the trailer!
Unfortunately, my wife did not take any photo as she was helping me with the boat.

After this stressful launch, we had a great trip and nothing went wrong.

panoramic photo of the Porta Bohemica (heading to Usti nad Labem)

Last river lock on the river on the Czech Republic side called Strekov
(on the right castle Strekov from 14th Century)

Near the Strekov, there are also thermal swimming pools and toboggan with water about 26 °C.

popular sailboat water skiing

lunch time after building sand castle on the Zernoseky public beach

little swans begging for food

The amount of the water (50l) tank was just enough for this 4 day trip and the electricity from the motor and the solar panel was more than enough to keep the battery charged for the fridge.

Retrieving the boat was then pretty easy, I tied ~5m of the rope to the trailer and to the hook on the car and pulled the boat out of the water without any issue.
This is a space for enhancements to our trailer and building some steel tube extension.