a homemade oland type tool works great for undercutting stuff. It's just a small scraper tip sticking out of a beefy steel bar. I've found that not having to ride a bevel while on an uneven surface is way easier. Not to mention the tool angle required for the cuts disappears. You can just go straight in if u want. Of course, the finish isn't as good as a gouge, but due to being able to make the cut with a more comfortable tool angle, you have more control and there's a much smaller chance of a catch.
Good luck next time!