The reason the 0.13 was never registered as a daily high is due to the size of the trade. For penny stocks, a board is 1000 shares. Since the number of shares is less than a board, it does not qualify as a full trade, and therefore is not considered for a daily high. Daily lows are also governed the same way.

Day traers use sub-boards to excite people to buy at a higher/lower level by temporarily raising/lowering the SP. They will buy shares at 0.13, hoping to start a trend gap upwards, then offload their shares, making a hefty profit. If they are shorting the stock, they will sell shares at a very low level, hoping to start a downward trend.

They use sub-boards so that the stock will stay in a predictable pattern should their attempts fail.