questions about "Tracking Down Memory Leaks"

[The Doctor]

What are some ways to track down memory leaks.
I had one, the only ways I can think of are:
1.Hard Reset and slowly reinstall every app, one by one,
with ample wait time between each.
2. Remove apps one by one, wait and see, until it's gone.

Is there any way other than these two to spot a leak?
What do you look for.

I use Mem Maid, Resco and Pocket Mechanic as resources.