Nice report DW! My last time out was 2 weeks ago, Geneva, 72 to 76 FOW. The fish were from 55 to 65 feet down. I busted out some old salt water bass sinkers I had ... 6 ounce and snapped those on. 50/135 and it was game on once I bump up my speed 2.5 to 3 mph.
Some say that heavy weights affect the way the crankbait runs. I don't know. I've never used anything heavier than 4oz in the past, and was experimenting with these 6oz and they worked. 😉 Several years ago I found a weight/depth chart that covers snap on weights all the way up to 6oz, but does not account for speed, but it gave me enough confidence to try those 6oz.