Hey Phil,
I also got bitten by the bbq bug earlier this year just as I started my 'lose 50lbs by my 50th birthday' campaign.
I thought the two would not make great bedfellows, but I've lost just over 1.5 stone in the last 6 months and stuff my face with bbq every weekend

I use the techniques in the Tim Ferriss book 'Four hour body', and it has really worked for me. Might be worth checking out.
Pete