Key to drilling most plastic is to NOT use a new sharp bit. The cutting edge sharp corners leave grooves (stress risers) in the hole.
A "grinding bit", or burr "melts" its way through.
A dull twist drill may work.
A new bit where you drag a stone across the cutting edge (parallel with the bit long axis) to dull the edge (more of a round scraper than a bit that cuts) can help. Look at the "cutting edge" of a cheap masonary bit, same idea.
Back up your hole (small piece of soft wood works) to prevent "threading the bit through" when you get to the far side.
High speed and slow feed rate also help.

Practice on scrap plastic (you can buy small sheets of 1/8" acrylic at a hobby shop or Home Depot in the US). Cheaper than breaking an expensive canopy.