I swear by the Azzpad for tailbone protection - it's a hard shell around your butt. I took a few bad falls on my butt while learning, and messed up my tailbone real bad and I bought this after.

I didn't like impact shorts because none of them come with a hard shell butt protector and it's a pain to have to pee with them on. I found the soft padding/shape wasn't enough to absorb impact on my tailbone.

https://www.amazon.com/Azzpadz-Azz002-D30-Medium/dp/B00PG44OQQ/ref=asc_df_B00PG44OQQ/