Following Recommended Exposure Levels…
IBD has moved to a gradated system of recommended exposure levels to guide their customers through ups and downs of the market. The idea is to get out when the market stinks and preserve your capital during big declines. Then, by using the “attempted rally”, Follow Through Day, and exposure recommendation, you get back in before it is too late. During choppy markets, you start getting in and out a lot and can get chopped up, but the system has signaled people out before all major declines. Preservation of principal, allowing future compounding, can be very powerful.
Anyway, here is a retrospective of the exposure levels leading you out and back in
I don’t show the incremental reductions, but once it sliced through the 50dma (red line), they started taking it down. March 13 was the final “market in correction” call, with a recommended exposure of 0-20%, we were just going below the 200dma, which you have to do before any major correction 
3/31 was a "rally attempt", which can be any up day after a “bottom”, the rally is intact until the low goes below the low of that last pink low day before the attempt.
Then, the system looks for a "Follow Through Day’", starting at day 4. This is to reduce early buying in a “dead cat” bounce on day 2 or 3. An FTD is when we see a significant move of 1% or more and volume higher than the previous day. Which is to say, we are waiting for meaningful institutional buying to give us confidence this rally has a chance (50% of FTDs do fail).
It took until Day 6 of the rally (4/8), which also took us above 50dma, to get an FTD, which gets us to 20-40% exposure. But there were plenty of signs that we could start nibbling: Day 3 and Day 5 were very nice upside reversals, one getting us above the 21dma (green).
4/10 took us to 40-60% exposure thanks to a nice gap up and (probably) being the third day with the low above the 50dma (hard to see).
4/13 was a subsequent FTD taking us to 60-80% Then 4/14 was another subsequent FTD, taking us to 80-100%.
This Friday, 4/17, looks like a subsequent FTD as well, which might convince you to closer to 100% than 80% exposure.
Our power checklist is looking fantastic
We have had 7 up days since the FTD, here is a list of similar. Some form a flag and resume, some crash down through the 21dma and get worse. If your charts can go back in time, this is your homework.