The marina in Ranier most years has a ice road to Sand Pt area for walleyes. Road plowed I think it was 20.00… The park road gets you out East.. Check with Thunderbird they should know and also the one stop bait and gas should have info…be carefull on your own if travelling by snowmobile. I’ve fished it in March for crappies east by Kettle falls Dam now that was a adventure… I have a friend who guides lives on a island close to Rainer he knows the lake I go with him in March Crappie fishing. Pm me if you what a contact number. Crappies up to 16″