Oh!!__We'd catch you all right__have no fears on that score__it may take 3 of us to wrestle you to the ground, but with the right incentive, i foresee no problems.

I would insist on John's written agreement first to ensure no misunderstandings. Would you suggest that we " LEAVE IT WITH YOU " or perhaps " WATCH THIS SPACE " ??

A 5% chance of success must be better than NO CHANCE.