Hi. This is my first post. Got my BH 3300 a few months ago and it has worked beyond my expectations. I have no experience in this but have done well in searching soil in the Midwest. Yesterday, with the kids, we searched on the beach in Florida. Numerous unrepeatable signals. Constant 01 and 02 signals. Then, when away from wet sand long stretches of few signals. I'm sure I'm doing something wrong. Ideas? Thanks!