As for fall tactics, bass tend to get more active and move shallower when it starts to cool off. They really put the feed bag on before winter. I have caught them two days before Thanksgiving before, in Idaho even. We still have several months of good bass fishing ahead of us. Unless they drain the reservoirs
I'd agree about fall - lots of fish strap on the feedbags as water's cool, and they sense the 'ice-age' coming. You'll probably find bass becoming more aggressive and ready to come out of ambush and slam a nice fat offering. Figure young baitfish have sized up over the summer, and they don't have to lose as much energy as hot-oxygen depleted waters would offer. So they might be more willing to come out and attack.
If you can find some structure, or depth changes - I really think a lot of Mantua is deeper than my finder ever tells me. Thick bed of weeds - so it might say 6-8 ft deep, when really it's 10-15, to hard bottom.
If you can punch down THROUGH the whole mess - you might find a pocket under the weeds - bass will hang out looking for food to fall down through, and slam it when it hits bottom.
Be ready for a good bush-wacking to haul them up through the salad bowl (heavy braid). I was surprised how heavy little dink Bluegill become after they wrap a weed frond or two!
Same thing on the weed edges. Been surprised how many times I'd pull a curly tail across what looked to barren weedbeds, only to be greeted by a flocking school of bass and panfish on the chase - coming out of the woodwork.
Find those spots where it drops from 8ft to 20ft (unless it's way low...?) and those weed walls will be hiding a slurry or hungry predators. I find a lot of trout frequenting those same transitions.
As for Bass On Ice. Seen some nice smallies from the View, and others elsewhere. Watched a number come up and watch ME on camera - caught several in between panfish and trout, but this was my nicest - last Winter - Mantua- 17 incher. Very different tug from the others, for sure! (more like a lump, or brick that don't move!)
So yeah - they still feed in winter.
I've never punched mats, but Mantua would be a great place to try it. I guess if they ruin my favorite ponds up north I'll be spending more time there anyway.