As you said, when bitcoin drops 5%, altcoins double or triple. When there is a rally, the first bitcoin rises, followed by major altcoins. If a rally starts to happen, it may be more profitable to switch from bitcoin to altcoins. It makes the most sense to only accumulate bitcoins during the bear season because there is very minimal risk for me. If you are a good trader, you can increase your bitcoins in possible jumps during the bear season.
You can continue buying bitcoin while the value is still cheap and you can do a day trade system so you can grow your holding little by little.
though it's not an assurance since the volatile nature of crypto market always applies in any crypto project that you'll going to invest, a good trader can compensated whatever the market direction is moving, both bear and bull is an open opportunity to the experienced traders who loves monitoring and following the market.