40 years of algae has been good for our course in Central Alberta, we have a great relationship with the Air Chair club, they totally get what we need for water conditions and the surfers, PWC and tubers don't get out of bed to wreck our water, from 7-10 am its almost like having a private lake. Toxic blue algae warning signs help us out too, we have never stopped skiing due to toxic algae as it usually only occurs at the other end of our lake.