Made it up there by 5pm to a very overcast and muggy sky. No wind, no bugs, no excessive heat. This could be a good thing right? Cruised out to freeway bay and started trolling a worm harness 50/50 style and settled in for the wait. Noticed lots of little boils, one to three splash type, every few hundred yards. We made it out in front of the feed lot before our first fish, a feisty 13" wiperette that put a smile on my face! Ten minutes later a decent cookie kitty went bendo on my spinner rig, alright! Lots more small boils with the occasional full on boil lasting 30 seconds or so. I put a 3/8oz kastmaster into a couple of them but was not rewarded for my efforts, picky picky fish I guess.
Curt hooked into another small wiper and we kept trolling out to the island and beyond to no avail. As we approached the last hour of light we motored back to the feed lot area and found the fish again, two nice walleye and another kitty! Wahoo! Walleye were 17" and 18" and fought like sticks but I was sure happy to catch them, fish tacos tonight!
Big thanks to Curt for his generosity and the conversation, thanks to mike4cobra for getting me on the 50/50 technique, I made my own clips just like you (or someone on that thread) described and it worked out pretty well this trip!