I didn't think about it from this perspective. But it does make sense and sounds like a good solution. I know that when people self upvote their posts then they do it early to collect the curation rewards and I somehow failed to consider the late upvoting.
The rewards that I have collected like this will be sent to a charity on a quarterly basis from my main account. This was the whole purpose why I opened my actifit account - to motivate me to move so that I can send more rewards to them. I did already a big donation at the end of the year but since I can't invest anymore at this moment and I don't want to power down I thought actifit would be a good choice.
This is irrelevant but I just wanted to explain that I was not planning to keep those rewards for myself.
EDIT: I have posted the reply from my main account but deleted it so that it doesn't get any upvotes.