Steve, if you don't mind passing some of the gold items and want to dig fewer pulltabs...here's an idea. Take your most common pulltabs and scan them in learn mode, then reject them, using the smallest cursor. If you want to dig more coins that are higher conductors(pennies, dimes, quarters, silver, copper) and fewer nails, then make sure you have iron disced out. If the occasional iron "sneaks" through discrimination and it has an odd fe # or the signal is erratic, then switch to quickmask screen and scan the signal again. If it bottoms out in the lower part of the screen fe #'s 27-35 then you can either dig it to confirm it is iron or pass it up for now and focus on the high conductors with lower fe #'s 18 and lower. These are just guidelines to help you dig more "goodstuff" but should not be taken as absolute, unfortunately we all have to dig the junk and if you got into detecting with the misconception that you will only dig up awesome stuff then you have been mislead. However, if you stick with it, learn your machine and what it tells you, research your area for promising sites, and just have fun. You will improve your chances of getting the "goodstuff".
Again, if you have more specific questions there are many here willing to help you!
Good luck
Again, if you have more specific questions there are many here willing to help you!
Good luck