My husband & I were up at our cottage in Moultonborough this past week. We were in the water everyday at some point or another
- NO DUCK ITCH!

I was VERY apprehensive about going in the water because of this thread and all the cases written about. So, as I read to do :I put on Sunblock(which was normal anyway); then after exiting the water, I immediately toweld off by rubbing dry; then made sure to shower not too long after being in the water; finally we made sure to wash out our suits every day.
Our vote is: Either these preventitive measures worked or it's an allergy thing.
P.S. - Do ducks get duck-itch ?