The 70-year-old explained to Lincolnshire Live how he became stuck.
“The Glory Hole is a lot narrower than the rest of the river so there is a heck of a flow on. I thought I could make it through but I didn’t have enough power.
“Like an idiot, I stepped off the boat and onto the ledge to try and shove the boat out. The current caught it and pulled the boat away and I only had one rope on the back. I was stuck on one side and the boat was stuck on the other side.
“There’s no damage, only to my pride. It caused utter chaos with the fire brigade.”
The fire brigade sent two water-rescue teams to assist in rescuing Fisher and removing the boat from under the bridge.
Fisher escaped the incident without any injuries and fortunately his boat, which he lives in, was undamaged.