Thanks to all for all the tips and advice.
I'm hoping to have a crack at something on Saturday. I work on Benfleet, Essex and so I spoke to a butchers on the high road and he's happy, subject to a bit of notice, to cut me a 'bone in neck end' with the fat cap on at approx 5kg for around £30.
For fear of ruining a piece of meat worthy of a better cook than me, I will practice this weekend on a standard shoulder roast with a view to tackling a proper boston butt once I'm more confident. My WSM is virtually new and is a bit volatile in respect of temp management. For those interested i plan to set up the WSM as follows...
Minion Method (loading about half a mini chimney of lit briquettes into the hollowed out centre of unlit coals.
Dry Water pan lined with foil to manage mess - then a foil roasting tray placed inside it filled with water to act as a heat sink.
small pork shoulder joint and maybe a couple racks of loin ribs on top grate.
