Beancounter,
Normally get said lobster and crayfish myself from a rather large pot - excellent shellfish to be had off the coast of Wales when I have been there. Ok, so you have to drop down to about 30m below the surface but at least you know they are fresh! Also best way is put em in the freezer for an hour or two, shuts them down then you can boil them without them feeling anything (or so I am told...).