Lived in Hayden, ID from 1996 thru 2003. Fished the American Bass Assoc. Tournament Trail on all the N. Idaho Lakes -Hayden, Pend O'reille, Twin Lakes, Coeur D Alene, etc. for 5 years. For more local info you can stop in at Fins & Feathers, or Black Sheep Hunting/fishing shops. Can get licenses in both too ( if you go South end -don't forget to get the Indian Permit too - they own the South end of the lake now). I'd probably fish the South end of the lake & Chain Lakes area. Lots of nice Northern Largemouths in the shallows there. My Idaho personal best in Idaho came from Kilarney Lake (the upper most Chain Lake) - a 7-10, and most all tournaments are won with 20+ lbs. up there. There's a reason that BASS lists that lake, LOL. And the scenery, well, get ready for some real clear water, and fabulous sights - I miss it a lot!
Send me a PM, with questions -I got more.