Get yourself a 6" watermelon seed Zoom lizard and T Rig it with a 1/8oz weight. Just work it around the canal. Swim it, jig it, etc. Somethings bound to hit it. When the waters low like that, they will be in there, but they will be hanging out more than likely. When the water comes up after a good rain, look out. What I have noticed is these canals wake up after a good rain to bring the water up. The fish will then be patrolling the area in search of food. I was fishing in my canal today, with the wing making a good current, I had 4 3#ers in a matter of 30 minutes.