Let's say you bet £100 on UNDER and then you change your mind and you wanna bet on the OVER but you already placed a £100 bet on the UNDER ... what do you do when that happens?
I normally bet £200 on the OVER and then my chances are:
1) Get back only £190 out of the £300 invested (in case the under wins)
2) Get back £380 out of the £300 invested (in case the over wins)
Is that a good strategy or not?