I know CVDATA will allow one to set the point at which to begin increasing the bet to take advantage of a positive count, but I was not able to make it use a different strategy in reverse. That is, if you want to simulate oppositional betting (OB), you can tell CVDATA to bet one unit until a specified point, say, +7 for example, and then to increase all at once to max bet, but when the count begins to tank, one practicing OB as a masking technique might want to continue max bet down either to a set point other than the +7, say 0, or to continue at max bet beyond 0 until the the count stops falling (not that you can predict a run of big cards, but at least you can take advantage of any streak of big cards that might occur.) I am not saying you can make money trying to be in on "streaks," but you can evaluate this as a masking technique to see how much advantage you are sacrificing for the sake of masking your play. Also, if you were betting one unit until +7 as above, you might want to incrementally reduce your bet, 9 units, 8 units, 7 units, etc. as the count dropped, say to 0. As I recall, CVDATA applies the same strategy going down in the count as it does going up in the count. Please correct me if I am wrong about this.
Also, does CVDATA allow one to insert little masking flourishes from time to time, such as, when the count goes down, occasionally (or a set number of times) increase the bet one unit, and if one wins, keep the bet at two units until the count reverses. It's not to make money, just to mask one's play. Hopefully these masking techniques will come close to evening out in the long run. The purpose again would simply be to evaluate the sacrifice of advantage for the purpose of occasional masking, especially in play-all or wong-out-only situations.