If you get a cannon, you have to figure a better way to secure the probe. If you get a tangle and lift the weight before grabbing the probe, it's gone! My friend lost two probes in one season and switched to Depth Raider, he is happy. I got one near the end of the season, only used it two days, I am very happy with it. Somebody will say the read out bounces around, maybe old ones did, mine doesn't. I highly recomment the Depth Raider.