They don't realy care. The ericsons don't even live there any more. They have a caretaker living there who takes payment for boat launching and dock fishing in exchange for keeping an eye on the place. Pretty good gig if you are prone to getting up early any way. I think the sign says open at 0600 and not a minute earlier. They might open earlier during the summer when it gets light earlier but you'll have to go by there to confirm. I don't live up there anymore but I do drive past on my way to check on our rental in Prairie Ridge.
Hope this helps,
G