[rules-users] Approach for poor man's backtracking?

Hello, I am looking for an approach to implement "poor man's backtracking" in Drools. What I am trying to do is to collect "the impact" of alternate decisions. In some situations I can not "decide" which path to follow and what I need to do is to explore several paths and take a decision based on that results. What I have done so far is to collect the alternatives as I find them in a list and inserted them one by one. What I need to do then is to restore the state (backtrack) after I have explored one path. My initial approach was to use logicals for this (insert the "hypothesis", see what happens/ collect the results and retract the hypothesis). However this messes with the rest of my ruleset quite a bit. Then I was thinking of maintaining special flags on the asserted facts but this seems like a kludge to me. So I was wondering whether someone is aware of a more elegant / generic approach to implement such backtracking with Drools. Any hints appreciated. Cheers, Ingomar