How much do tides affect earth's rotational velocity? Many of us are familiar with an exaggerated picture of the Moon's effect on Earth's tides:
Since the Earth is not uniformly covered with water, however, I imagine that the tidal effect will depend on which part of the Earth is facing the Moon (for simplicity, ignore the Sun's contribution).  I'm sure that the tidal effect still affects the Earth's landmasses, but I'm guessing that it would be to a lesser degree (i.e.: the landmasses would bulge out less than the oceans in the image above).  Now, by conservation of angular momentum, if the landmasses bulge out less, the Earth should rotate more quickly, hence this question's title.
How does the tidal effect of the Moon's gravity affect the Earth's landmasses differently from its oceans?  And how big is this difference?
This question is handeled pretty throughly in Physics site; 
https://physics.stackexchange.com/questions/214042/earths-kinetic-energy-change

Your question; "How big is the difference?"

Body Tides Summarize
0.3 ms for a 14 day period.
0.16 ms for a 28 day period
0.14 ms for 1/2 year period
0.02 ms for a year period.
0.126 ms for Lunar node period; (18.6 years)  

Ocean Tides
Max 0.05 ms for a 14 days period
0.026 ms for a Years period
0.024 ms for lunar node period