As an alternative to the hassles of public pooping, many people use adult incontinent garments (diapers.) They are much less bulky than they used to be, and can usually be concealed by your clothing.
When I was flaring, I used to always have a complete change of clothes with me, just in case.
Ulcerative colitis forum co-moderator
Moderate to severe left-sided UC diagnosed 2001.
Flared for 5 years, finally in remission with Remicade since March 2006.
Avascular necrosis in both shoulders is my "forever" gift from steroids.
Colazal, Remicade, Nature's Way Primadophilus Reuteri.
"My life is an ongoing medical adventure"