Hello all. I just purchased a XL 500 pulse.I have never used a pulse machine before.I have been using VLF's for 20 yrs.I purchased this for salt water (Florida) surf/beach hunting. Any words of wisdom for this machine? sweep speed,pinpointing,settings? I know this is older PI tech,but it also comes with the 13"coil that I hope will give me more depth.(once I figure out the stock coil) I know I will be digging tons of junk,I already zip tied a magnet in my sand scoop. I am giving surf hunting another shot,I tried for a few years with a CZ20 and my finds were no better than dry sand hunting. Thanks for any info.