Visit the Team Iceshanty Proshop
Plenty of access, it's just a b*tch getting to the actual lake from off of the secondary highways, I got lost a few times before... If you search "Alberta Atlas of Lakes" (forgot the actual web-site) you can find some great maps of Lac la Nonne that may help you out to no end. I recommend the south-end boat launch for access, though you'll have to get out quite a ways to hit deeper water (like 300 yards). No easy spots to walk in & drop lines that I know of. Good Luck!!
Any updates on fishn, heading to Lac la nonne tomorrow ;D will post results Happy New year to all who seek the hard water