Not putting cancer in your mouth is the best substitute I've found. What are your reasons for not quitting this very second?
Oh, and around here "quitting" means adding your name to Roll each morning. Making a promise to yourself, your group, and everyone on KTC that you will not use dip for 24 hours. Keep your word all day then repeat tomorrow. Anything short of that is not quitting. Quitting is a continual battle. Quitting is a choice to fight every minute of every day, one day at a time. Quitting is an honor - many try - many fail.
We do it one day at a time with the support of everyone here.
So, again, why are you "thinking very seriously about quitting". Do it cold turkey, 100% effort, following the KTC laws, or don't. There is no middle ground here.