Whats up with these gator attacks?

Living in Florida its always in the back of your mind but the love for wakeboarding keeps you out there. Every time I go down and Im waiting for that boat to come back it crosses my mind.Ive seen gators in fact Ive rode right by them at lake Thonotassa. I was probably within 20' of it before it went down.I just think there getting use to humans because of development. Another time at the same lake our rider went down and one surfaced about 30-40' behind her. That was freaky she didnt even know it was there so we told her so she would get right up and she did!