Well, this one isn't quite a practical joke, but it is a funny story...
I have a good friend who is an avid fisherman, but not a boater. He doesn't even own a boat.
A number of years ago the two of us were out in my boat fishing from the North Arm Jetty down to the Jetty off of Sandheads. I don't normally sleep on my boat but on this day I had been awake all night getting ready and had only an hour or so of sleep. Some time in the afternoon, I just couldn't keep my eyes open and told my friend to take the wheel and call me if anything happened.
It was my turn on the rod for the next fish. It wasn't long before I was sound asleep in the cuddy. Suddenly I'm awoken by the unmistakeable sound of a Shimano reel screaming line out.
Now we had been fishing for Chinook and the downriggers were set at about 100' or so.
I came stumbling out of the cabin to the back deck and grabbed the port rod and started to reel. I'm shaking the sleep out of my head and I look down and see that the downigger cable is looping in coils toward the water surface. I can't figure out what is wrong, so I look over at the other side. That downrigger cable is straight, but it's going straight out the back of the boat! Not normal for 15# weights! I look around and we are miles from shore. I look into the cabin and the depthsounder (right in front of my friend) is reading 18 feet!
I'm still really groggy from sleep (and lack thereof) so I look around again - yep, miles from shore. Yep, downriggers acting funny. And to top it all off, there is no fish on my line inspite of all the reel screaming a moment ago. My brain is struggling to do the math - downriggers set at 100', 18' of water, miles from shore. I put the rod in the holder and start cranking up the Scotty. Yes, in the old days, we had to hand crank the damn things.
I get the one up and the ball is gone. I bring up the other one and after getting it unhooked, it comes up with the ball. The flasher and lure are gone from one side, but OK on the other.
I finally figure it out. While I was sleeping, my friend headed into the shallows just north of the Steveston Jetty and dragged the cannonballs through the mud into 18' of water (and 80' of mud!).
He never bothered to look at the depthsounder!
Fast forward to 2007. We are fishing at Ferrer Point off Nootka Island with the same friend and his wife and another couple. All close friends. It's sort of a guided trip, but because we are all friends, I get a turn in the rotation for fish.
Any way, I am on the back deck setting lines. We are fishing in anywhere from 50 to 90' of water depending on where we are and are setting the lines at about 30 to 50'. I drop the one downrigger, planning on going to 40' and clunk! It stops at 18' and snags! Guess who is at the wheel - you guess correctly!
One rock in the whole area and he runs right over the center of it - inspite of the 10.5" mapping gps and depthsounder right in front of him!
Jim's Fishing Charters
www.JimsFishing.com
http://www.youtube.com/user/Sushihunter250