This double d coil works great on my Vanquish 550 in salt water, beaches, parks and forests.
Minelab Vanquish V10 Coil
Most of my hunting is at parks, schools, camp sites and play grounds. The big 11& 12 inch coils are too big and the small 6 & 8 inch are generally too small . this coil is the perfect size for my type hunting. It provides good coverage and good target seperation.