I typically unclip the right foot as that is the curbside when coming to a stop. I also try to unclip at every intersection whether I plan to stop or not, unless I'm just bombing through. If you think you may stop it's worth it, just keep your shoe in the clip so you can just push down to clip in if you can keep riding. The biggest risk for me is when I'm doing something unusual, like a U-turn on a busy highway where I think I can keep going, realize I can't & I'm not prepared to unclip. That happened to me last week & suddenly I was clipped in, not moving and had to trackstand while I unclipped. Thankfully I didn't stop, nor did I push down on the pedals to maintain balance as that would have pushed me into oncoming traffic.