Are there any sites that let you make a custom dashboard to monitor global hash rates of particular coins?

The idea here is to watch the global hash rates of coins you mine.

If you see a sudden spike in a particular coin you happen to be mining it might be a good time to switch to an 'easier' coin.

This could be set to alert you if say one of the big farms starts mining your coin and increases the difficulty.

Any thoughts on this?  ( I know the auto profit switching places like miningpoolhub kinda do this already)