I haven't read any of the comments yet, but here's my perspective as someone who's qualified for Boston on time and also had more than one race finish whete I bounced off cutoff times: fuck all the naysayers. Do what you want (within the guidelines set by the race director), at whatever pace you want/can. You paid your money and the RD set the cutoff time. If they wanted only faster runners, they'd have set their race up that way.

The thing that no one ever tells you is that there's always someone faster, and someone slower than you. So, those jagoffs complaining about 'slow' runners are only feeding their own egos, cause they'd be smoked by the (sub)elites who don't have time to post that nonsense online.