Where is the best location to install a drain plug on an automatic transmission pan?

I was thinking to install it on forward facing edge of the pan because it would be easy to get to when draining the oil and replacing the filter?

Thought about on the bottom too, but don't want to do that on a truck.
I'm scared I might scrape the ground one day and rip it off.

Thinking to install one this weekend and want to go in with a plan.