I follow a similar strategy however
I generally look for smaller price moves of around 8 to 15% and generally only remove 70 or 80% of my original capital, then look to re-enter the same stock at another low point in its price cycle...on the second and third entry's i reduce the capital i leave in until the forth entry when its just profit left in, eventually giving me a roughly 30% capital / 70% free carried dividend paying investment.
This way my dividend yield grows by trading and leaving in mostly profit, i then look at the dividends as profit on profit....it can be a slow grind at times but overall my strategy is working.
4 years ago when i started (just before the GFC) i had a portfolio of 4 stocks and now have 23, dividend yield has grown from 4% of my (capital gains excluded) income to 16% last financial year...on target for 20% this financial year...and so far its been a bad year.
I call it 'low cost averaging' because im looking to buy at low points in the price cycle and im happy to have some capital invested in my stocks...its a variation of 'zero cost averaging'
http://thepatternsite.com/ZeroCostAverage.html
http://www.traders.com/documentation/feedbk_docs/1998/04/Abstracts_new/Quinn/Quinn9804.html