i just spent some time with family in north miami and fished the canals. they flow fast with tons of weeds. i had a few small chases and strikes by small largemouth and a large peacock at a neighboring lake but nothing in the canal. i saw jacks hitting the surface once every hour or so but no takers no matter what i threw at them. i did go fishing mid day and it is a bad time of year but i would appreciate any advice that can be given for this area. 

Current is heavy now because of all the rain.   Bass can't swim against this current for long, so they position themselves where they can get out of the current and catch bait as it drifts by.  You may be able to catch bass on the bottom by casting a Texas Rig worm up current and working it back.

 

Now is a good time for snook and tarpon fishing. Try a Rattle Trap in this current.  A 52M Mirrolure is also a good bait to throw at these fish.  Use a 30-50 pound mono leader or your line will be cut off on the snook's sharp gill plates.  Snook in these canals can grow quite large.  South Florida canals are full of bass.  They are suckers for a Rapala. There are peacock bass in some South Florida canals.  Others will know more about fishing for them than I do. 

 

Any body of fresh water in Florida can contain bass. I've caught them in brackish water less than a few hundred yards from the Bay.