Snubby is giving great advice here. I posted that question on MDWFP website and received an email from them saying "no limit on poles" outside the riprap. I keep the email in my phone for proof. I asked game wardens that question several times and got an equal number of yes and no answers on pole limit on lower lake. That's what caused me to ask the folks in Jackson. I wouldn't fish more than four poles without something to back it up, although I've never been checked out on the lower lake by wardens (only checked at ramp).