Concidering guns are legal in both countries speaks volumes about the culture around it in the US. I am anti guns and dont believe any civilian should have it legally but still. The fact that all the shootings happen in the US and not Canada concidering above mentioned fact shows that US mental health must be fucked.
Yeah gravel trap is always the solution. It isn't dangerous like a wall if you spin in a high speed corner, and it magically reduces the amount of over the line incidents.. Edit: and in hindsight if gravel would ruin other categories driving there, one could add a special rule about extra harsh time penalties on that specific corner (corner 10) or something, lol.