Bounty Hunter Tracker II

I have this tracker, came with a standard 7" coil, and its solid. I'm curious to know if there are any advantages to going with an opened coil or a spider coil?

Hi,
 I may be wrong here, but I don't believe you can swap the coils on that model. I looked at the manual and they don't mention it or show any other coils as an option. On other BH models that have the spider coil standard, you can use either the 4", 8", or 10". In answer to your question, the closed coil that your detector has will work fine. The spider coil is easier to pin point with as you can see exactly which blade of grass is in the center of the loop. They do tend to snag on brush and deeper grass more than the closed face coil, however. The 8" spider coil will probably have a tad bit more depth capability that the 7 1/4" coil due to it's slight increase in size. Just my thoughts, hope this helps.

Do you happen to know if the coil is waterproof? I know the control box isnt, but wanted to know if the head was.
Another question. I'm curious to know the best practices with this model. I know its older and somewhat dated, but until I can afford something else, want to get the most out of it. I currently sweep in tone mode, sens at 10, disc at 9. Is this the ideal setting to find jewelery, clad, and older coins? Or should I go straight metal and dig everything I hit? 

Edited with further questions

Hi,

According to their website, the coil is waterproof.

http://www.detecting.com/products/product.cmdl?c=4973a40cecab4274

Here is a link to the owner's manual to the Tracker II.  It looks like it has info in it to help with your settings.  Page 12 gives quick settings for various hunting applications. 

http://www.detecting.com/pdffiles/TrackerII.pdf

Happy Hunting,
Doug