At my home area we have an open boundary policy. Very few of the boundary areas are roped, & much of it borders USFS land. We do have ski area boundary signs placed every couple of hundred feet or so.
Most of the areas outside the boundary lead into active avalanche areas. We have daily avalanche forecasts posted as well as beacon testers at the most popular departure points. AFAIK, it is acceptable to duck these boundary ropes to leave the ski area.
We also have many Avalanche Control Areas within the ski area boundary. These areas are clearly marked, roped & gated. The signs are flipped open as the gates open. There are signs along the roped areas that say "Enter through Gates Only". The policy, to the best of my knowledge goes like this. You may leave the ski area boundary at any point, as long as you are not passing through a closed avalanche control area. It is also against the policy to re-enter the ski area through a closed avalanche control area. Once the avalanche control areas are open, you may enter through the gates only. You are not allowed to duck these ropes. People who duck ropes here can & often do face criminal prosecution.
The reason for this is that avalanche control work could be being conducted at anytime when these areas are closed. During times of heavy snowfall or changing conditions, the gates may be re-closed to do more control work.
It is never a good idea to blindly follow someone or tracks into an unknown OB area. You may putting yourself or others below you in great danger.