Hey wambat,
Right now on the MN you dont really have to worrie about depth the river is up 6 ft so water is not a problem. You will want to try and find backwater or have a very small amount of current behind wingdams or loggams. If you can get bullheads i would recommend using them. Also becarful and watch out for logs and trees comming down river. Franklin has very good cattin water and there are good current breaks! Good luck this weekend!!
Kyle