.....and when flying aerobatics on a hot day (high density altitude) give your model more airspace to complete/recover. Start your loops and spins at a higher than normal altitude and begin to recover (from spins) sooner. The model will respond a little slower to your commands. Go a little easy on the elevator imputs. High speed stalls are more common on hot days as well as stalls on take-off or go-arounds.

One of the most common remarks I hear on the flight line, is "wow I can't slow it down". When on your approach to land, pay close attention to your elevator sensitivity/responsiveness and remember the model will have a higher ground speed at touch down than on a colder day, thus requiring a longer rollout. This will be most notable on a (high wing loading) model like a WWII warbird or scale jet.

Always respect density altitude....and Mother nature