Jellyfish

A few days ago we took our boat out on the Navesink River in NJ and there were jellyfish everywhere. I don't mind being stung a few times so I thought I would be fine. I went in with a longsleeve rashguard and boardshorts. After fifteen minutes of riding and falling a few times I had to stop because I kept getting stung all over my legs and wrists. Has anyone else had problems like this? Do you just drive around to where there are less jellyfish or do you just where a fullsuit wetsuit to prevent being stung? Another option would be to wakeboard in some of the coves on the sandy hook bay where there might be less jellyfish because it is about 5 degrees cooler. What do you think? THanks!