Since no one seems to have actually answered your question I will try to.
Yes, for the most part, what you saw last year off olcott and Wilson in May was pretty normal. The Kings were feeding heavily on alewives coming out of the spawn and the 70-100 foot range is where the bait was.
Winds can move that water (and the bait in it) and you might have to search for it on some days. Understanding the effects of the wind on that band of "green" Niagara water is critical to May fishing on the west end. For example, two days of hard south wind can move that band of water offshore as far as 6-8 miles!
Generally speaking--find the green water and you'll find the Kings.
Hope that helps.