The general belief is that ground moisture affects performance to some positive degree. I do believe the opportunity for gold hunting there especially in the area of lost jewelry is awesome, but you'll need to be discreet of course.
When you get the detector of your choice, be sure to test it before you take it ouot. Drop a piece of jewelry on the ground and see what it sounds like, now it will sound the same as any "good" target because of thenature of your machine.
The fine line is where you set the discrimination so the machine starts to make a broken or inconsistent sound when it's over junk and a good clear sound over good targets. Of course this line is crossed by some junk and not crossed by some good targets, especially thin gold chains for example. Do set the disc where it might eliminate most pulltabs for example, since they will be close to a lot of the gold you may find there. Your coinage should also be accounted for in this setup process. If hunting the smaller denomination coins cause you to dig too much trash, then accept this as a loss and only go after the larger denomination coins.
Soon enough, you will be able to see where the best target range on your machine is and oh man will you be making some of us hunters over here jealous! Even with a low end machine and especially if there are lots of otherwise unhunted sites near to you!