i bought a bounty hunter sharpshooter2 for my first detector. it comes with an 8 inch coil, so i purchased a 4 inch coil to narrow my search in the trashy areas i hunt. dumb question...am i wrong, will it cause my machine to lose signal depth? any major advantages/disadvantages to the 4 inch? i haven't used the 4 inch yet, was just wondering? thanx