Probably too late for you now, but I'm on the St. Lawrence (Clayton) and there are 2-3 hard shacks out in front of my place. LOTI always holds ice much longer than in front of our place, so while it's not concrete, I'd say the odds are LOTI is still decent ice with water on top.
Could always call TI Bait Store to confirm.
By next weekend, hmm, might be tough - I don't think we dip below freezing for more than a few hours over the next 10 days.