I have permanent fissures left over from my diagnosis. They get sore and irritated when I'm having a flare, but when I'm feeling fine they dont really bother me. There are a few things you can do to make them more comfortable.... the biggest, for me, is Calmoseptine. It's an ointment you put on "the affected areas" and it really really really really helps. You can get it at any pharmacy, but most don't keep it in stock so you'll probably have to ask them to order it. I typically keep a little bit on there 24/7. I put some on after I wipe, after I shower, or if its uncomfortable ill sometimes wipe it off and put fresh ointment on. I carry a tube with me wherever I go, flare or not. I also recommend investing in nice soft toilet paper. It's worth it. Soaking in the tub also helps, but I see you know that already.
Also, stay away from bicycle seats.
21, Male, diagnosed over Christmas Break of my Junior year in High School.