I have been hunting alot of play groungs with my landsatr and wife's 3300, the finds have been fairly good. But I am spending alot of time digging around the equipment poles. I will get a good tone about 18" out and sometimes can follow it up to the pole. I have turned the sens. all the way down and I still get this. They can be new or old so I can't see a deteration factor. I find some good stuff under the play equipment but with the support poles I have to dig all all the wood out and scan it then put it all back.Needless to say this is very time consuming. What does a person do to aid with the blue poles? The parks like this due to the chips are suppose to be turned to prevent compost fire.