Nice job Wayne... way to find them and get into them.
I was up that way on Thursday as well... went out of 19 mile bay. Ice was solid (drilled over 20 inches) but as you said - there were some big drain holes and anything near structure (rocks etc) was open water. I did see a couple of vehicles out there... but not something I would recommend.
Walking was easy and I put in over 2.5 miles trying to find the whites... never found them but managed a laker and some small yellow perch. Next time...