strike it rich said:
Would love to see a brief write up one of these days such as the methods you use to gain permission search patterns, retrieval techniques, the effect moisture has on depth, tools used, the halo effect, culminations of pockets of finds, research tools, the treasure act, health and safety, gridding methods, average hours per field
,the size of your team, total amount you've found, average age of finds.
oh and what kind of biscuit's you dip in you tea or coffee ,choclate.
Best wishes S.I.R
methods you use to gain permission; Flagging down tractor drivers in the field, knocking on farm doors, ringing farmers on the phone, getting present farmers to recommend us to others, being 100% honest & showing 100% of the finds, 50% slit of treasure trove items, member of the local historial society, displays in the local museums
retrieval techniques, halo effect & tools used; Garden Spade & no probe, always dig back from where you think the target is
effect moisture has on depth; It's good when its wet, but I detect as much as I can even if bone dry
culminations of pockets of finds 
I use a market stall traders zipped finds pouch with a rubbish pocket, lead pocket for recycling, finds pocket, spare pocket with bits & pieces
research tools; Internet, Google earth, my library of books, book writing contacts, dealers, museums, PAS, maps, Local Records Office, Library, metal detector, intuition
the treasure act; Just read it
health and safety; Army boots
gridding methods; Cover the whole field however big in 300metre strips. 4 flags (Great Britain of course) 1 at start, 1/4 of the way, 1/2 way, & end.
average hours per field; Too many variables, size of field, time between harvest & planting, set-a-side or grass
the size of your team; 2 (Me & Dad)
total amount you've found; Wow, it would take a few days to count
average age of finds; Late Medieval
oh and what kind of biscuit's you dip in you tea or coffee ,choclate; Can't remember I was 8 years old