I was lucky enough to rebalance on March 20th into an additional 100K of stocks per my IPS and that definitely boosted returns. I just rebalanced back to fixed income with 60K just before Thanksgiving.
I sold a chunk about a month before that and bought back two days before or after the bottom, (don't remember, to lazy to look it up) would have been great, except I also had some REITs that I lost bucket load on, one or two may even go bankrupt.