Current boat vessel is an intex sea hawk 3 inflatable which I have a 3 stroke honda gx35 air cooled motor mounted when going out. It works a dream on choppy and rough waters and its only 2HP, Its light and durable and fast.

The other day I took it out to a river where im from called the Hunter River an hour before sun set. The water was very choppy which then calmed as the tide start coming up. I went a little bit further out than usual. Whilst attempting to return I was unable to get back maybe 300 meters from the boat ramp,

I thought it may have been a the tide and my engine wasnt powerful enough, however I would float with the current and 20 meters down I could start the engine back up and power against the current then get stuck again at that certain spot and just not move. I attempted to row even with the motor going but the raft would not go any further. I tried different part of the water but it just would not let me through. I tried to for hours trying to get back. I put my oar into the water and it wasnt shallow, the engine would cut out after sitting in the sport for 10 seconds and just cut out when id slowly float with the current then Id start the engine and power back up

What cause this? I ended up having to get someone to meet me at a different point 600 meters away.