Well I finally gave in and used the time-travel exploit to get passed the 10 play coins limit.

Now my XL doesnt want to streetpass with my other 3DS. Do I have to wait a day for the Streetpass ability to reset itself?

@Rizsparky - I believe so. Since I'm not usually out on weekends and I get about 95% of my StreetPasses at school, I usually just do this on weekends (though I haven't been doing it lately).

Ah ok, so after you've done the expolit you have managed to successfully streetpass with mii's youve already streetpassed with?

@Rizsparky - Yep, I've done that before. Usually I'd exploit it on a Saturday, and I'd get StreetPasses as if nothing happened on Monday.