Yo.
Nice idea, making new techniques that work for you is an interesting part of lucid dreaming experience. Due to difference of various aspects of lucid dreaming between different people, the best technique is most often the technique that you make by yourself by using knowledge from other techniques.
Though as with any stabilization technique, i'd say that you should avoid becoming mentally too dependent from it to the point of exiting the rain making the dream unstable. Stabilization techniques are better to be used to help with stabilization, not to keep stability.