Ha, I actually make a Berrymelon Ice! Love that flavor. I used Extreme Ice from Flavor West, Watermelon and raspberry from LorAnne's. For the Extreme Ice I use 1 drop/ml, the watermelon and raspberry I find very sweet. Those flavors I use 3-4 drops per 10ml, ymmv. The Loranne's I got from Wally world but everything can be gotten from ecigxpress.com  The lorAnne's watermelon is more like a candy flavor, if you want a real watermelon flavor, get FlavourArt. It's amazing! (by itself,never got to try it iced)