Jimkjr, welcome to SMF! I see this is your first post. Hop on over to Roll Call to say "hi." That's where folks typically greet new members.
The general technique for smoking pork ribs is to apply your preferred rub 12-24 hours ahead of time, wrap the ribs in plastic, then apply a little more just before you put it on the smoker. Not sure I've heard of people applying marinade to pork ribs that are going to go on the smoker unless they are making an ethnic type of rib (Chinese spare ribs for example). Marinades work for ribs you are going to do in the oven because there's no smoke to impart flavor to the meat.
Hey, look at the link below. There's an old discussion here on whether folks marinate their ribs or not.