Depending on the diaper and the booster(s) used.
At some point the boosters will be too thick to allow the leak guards to do thier job, coming loose/off the skin and allowing things to bypass them and leak out.
Now if you just want bulk in the diaper area it's fine (Not using them that is).
Or you can look into waddle pants or spreader pants that will give you the width/padding in the crotch area more than any diaper can, usually leaving you no possibility to close legs and/or walk normally or at all, depending on the type. Spreader pants might be more ecnomical over a long time as they go over any diaper and are reusable for the most part, some are lockable and even have a harness that keeps them from not being removed as well.