Using Throws in Karate Nationals?

Im competing in the Karate Nationals and Id like to use a throw but I dont know any and I have a month to learn one now. The rules say that I have to hold onto the person throughout the entire throw and I cannot throw them ove a point higher than my hip. Im looking for some kind of Judo throw that I could easily master, could you please give me the names of a few? thank you,