I have to revive this old thread and thank everybody for the good info. RJG-Ross, I plan to get cactus paddles and try that out. I found this thread and website via a Google search. This is my first post on this site.
I got back into running again after not running for about 15 years. I'm 41. I got my J-pouch 6 years ago. I bleed from from my anus occasionally when I run or bike. I think it's because running and biking are the only activities in which I push myself into a second wind. It first happened about a year ago. I just chalked it up as hemorrhoids. I should have taken it more seriously. Probably like all of you guys, I'm numb to seeing blood coming out of my anus.
I don't run any farther than 3 miles currently. I'm training for a Spartan Race in November. Hopefully, they have porta-potties on the course because it will be uncomfortable holding waste inside.