There are some things you can do to improve your situation. Many pouchers find that eating Metamucil wafers helps to absorb excess liquid. Try eating two before your meal. It seems as if you only want to sporadically take the imodium; lots of pouchers find that they need to take it regularly; there's nothing wrong or dangerous using it. Your best resource for help is at www.j-pouch.org That site has over 6000 members who have had the surgery and they might be able to give you some advice. I don't have the issues you have so I am not the best person to respond.
dx proctitis in 1987
dx UC in 1991, was stable until 1998
1998 started prednisone, asacol, pentasa, nortriptylene, ativan, 6MP, rowasa enemas and suppositories, hydrocortisone enemas, tried the SCD diet, being a vegetarian, omega 3s, flax, pranic healing, yoga, acupuncture, probiotics
2000 lost all my B-12 stores and became anemic
2001 opted for j-pouch surgery- now living life med-free