On the light side

This could very well be me and my fishing honcho unca J D (well maybe not)......................................Two dumb fishermen decided to rent a boat on a lake After fishing for hours at various spots and catching nothing they decided to try one more spot before calling it quits. Suddenly they had found a honey hole and were pulling in fish ,left and right.After twenty minutes they both had their limit. "Hey we should mark this spot so next time we'll know where to fish the first guy told his buddy."Good idea the second man replied as he took a can of spray paint out of his tackle box and sprayed a big X on the floor of the boat."Why did you do that?" his buddy asked."Now anyone who rents this boat will know where to catch fish"