thanks to forum member lightstryder i got a great deal on used sand shark, took it out today to two different beaches the first one found a few coins at this beach the sand is almost all black sand and the sand shark seems to false on every swing so it was hard to tell deeper signals. on shallow targets it was no problem i think maybe i was sweeping the coil to fast, the next beach i went to has way less black sand and i did much better it was high tide so i stayed in the dry sand area found some cool things and alot of trash overall i was happy for my first outing i think as i learn how to run it i will do better. any advice or tips from you sand shark owners would be appreciated hh