Watching a stream of thoughts from the mind? Watching bodily sensations is simple ,there is always a sensation to recognize in the present moment .Same with breathing ,hearing and seeing.Always a reception exists realtime.


  For example:-
  
  In breathing: there is a slow breath ,heavy breath ,refreshing breath.
  
  In the body:There is comfort ,tightness ,discomfort.


But the mind as a sixth sense isn't as easy .It doesn't seem like it always keeps receiving a continuous stream of thoughts to recognize in the present.

Is there a meditation practice that can help recognize thoughts continuously ?.Or do thoughts pop out erratically and according to ones interaction with the aggregates?. 

Edit

What I mean by thoughts as in ideas coming to the mind.
I don’t really understand what you want to watch,.

Do you want to watch the mind or the mind objects (thoughts)?

There are a lot of ways to observe the mind.
Here some questions you can ask yourself for practice, but also in daily life:


How am I feeling right now overall, pleasant, unpleasant or neutral?
Are there any unwholesome states, like anger, greed, frustration, restlessness, uneasiness, irritation, boredom, impatience, clinging, distraction, and so on?
In case of wanting: Can I see if it’s a wholesome desire or an unwholesome one?


Point I’m trying to make is that the mind is so much more than thoughts. 

Of course, watching thoughts can help in determining what state the mind is in. But watching them is not the same as getting to understand the mind. The mind is more than it's objects.

Another thing that might be useful to know is that what someone means when they say thought can differ.
Some mean stories in their head, others impulses that come up, and so on. I’m sure you can see that there is a significant difference here. So, it might be useful to always figure out what one means with the word ‘thought’.

Hope this helps a bit.