I dont miss the "mast abeam" rule at all. Some of the old-timers in our club still hail "mast abeam" at us sometimes, and it always confirms our suspicion that they have not read the rules for the last 8 (?) years (it also cracks us up, and we make sure to stay away from them as it's just non-serious racing).

I am a bit unsure about the barging rule, if you by not letting him in cause him to hit the RC boat and does damage, will you also be penalized for not foreseeing that?