RE: Do you feel the soak is more effective than direct application?
If the soak implies the infection site: Yes
RE: Would you recommend an Miracle-Mineral-Supplement version of your soak?
I'd recommend CDS first and foremost for it's higher purity properties. Though I wouldn't hesitate to use Miracle-Mineral-Supplement if CDS was not available etc. Keeping in mind that DMSO will carry any and all impurities in along with it during use.
RE: What directions would you recommend?
I'd use a trial and error approach. Though I'd prefer to use CDS whenever possible due to it's neutral properties in such cases. ie, activated Miracle-Mineral-Supplement can easily become an irritant in topical applications in contrast to CDS. That said, I'd approach the issue by starting off with a given concentration in warm water mixed with equal drops of DMSO and move up from there until so as to find a suitable limit.
RE: I have been pouring normal activated Miracle-Mineral-Supplement directly onto laceration
While I'm confident that placing Miracle-Mineral-Supplement on an open wound can help, I'd urge that you consider the benefits of transdermal applications. Which in my personal opinion, would be far more beneficial in terms of getting the chlorine dioxide where it is most effective.
RE: nor do I understand why it doesn't become inactive sitting out like that
MMS has the added benefit gassing out throughout the course of activation which gives it an added persistence. That said, it's also worth noting that Chlorine Dioxide is water soluble and will remain long enough in a DMSO mixture to do the work.
Beyond this, I've had very good success with nanoparticle types of Colloidal Silver in terms of sepsis. That is through oral(sublingual) intakes which proved to be far more potent than garlic in my own case.