The bamboo poles sound good as long as they are sunk well into the ground. Make like a monster tomato cage. I've also used 2x2 lumber, sharpen one end to a point, stand on a ladder and pound in. If you have some extra 2x4s laying around, saw one of those in half long way. Another way is to line the long stakes along the edge of the plant row, on both sides, and use string to make a "fence". I prefer a nylon strong as jute or cotton will sag quite a bit.