I called tesoro tech support finuring i get someone in the know. They said with electrical interferance thay doubt changing coil size or type would make any difference
at all. And i asked about widescan vs concentric at the beach and got the same answer, in dry sand they said there would probably be no difference. Now if you cant make a a DD that makes a difference in conditions detectorists need why bother making widescan coils at all. Im wondering if he really knows anything about detectors at all.