Is the risk greater that the reward
You have a 30 day period in which your chosen player qualifies for the 2p goal and 0.5p assist dividends, so you do your research and find a player with a good run of fixtures in a PB league, plays in Europe and in the Nations league within those 30 days.
If your research is good and you are in fairly quick on the player you will most probably get some capital appreciation on them with other traders buying a little later than yourself, if you were to sell now is this the only way you could potentially benefit from this?
In them 30 days your player could have 5 goals and 2 assists given you 11p return which is good but it's very unlikely a sub £3 player will produce that kind of form, even the likes of the big boys won't hit that often so taking into account commission I struggle to see which players you can make profit from other than sub £2.
Injuries, what if your player gets injured, the players price will plummet and your purchase for the 30 days ahead are out of the window depending on the length of the injury, it's not like KDB where he will rise as people are looking to the long term. Who is going to buy a injured cheap striker for the long run? Not many.
IMO the best thing to do with this is not change your strategy at all, the MB and PB rewards are far greater and safer to play for than this. If you buy a player and he scores within your 30 day window that's great and lovely added bonus but I don't see the benefits of chasing these dividends.
Long and short of this, buy for the long run, I think it's going to be very hard to make profit within those 30 days if you are to buy and sell. Buy the player and hope he had a good first month after your purchase. Don't sell, invest not gamble.