This was my experience even on a '98 CRV
OP, if you do a non-fouler, don't do just one. Stack at least 2 together, and I'd even consider 3 if there's room.
I'll have to disagree with you on this one. While I've used this trick in the past, I found that using more than one of the "long reach" non-foulers almost guaranteed a new code: B1S2 Low Activity. The PCM needs to see SOME action by the rear O2 in order to fulfill it's logic checks. I experienced this as far back as my '98 Seville, so it doesn't just affect newer vehicles.