I assume Op meant like "yes we are in a bull, but what if bear starts?" because as we all know ,bear comes after bull, so we should all be ready for it. Doesn't mean we are done with the bull right now, bull could still continue for a while longer, what I assume OP talks about is, let the bull runs its course, make as much profit as we can, but then we should stop with that and start making money on whatever we can during bear.

Because if we only focus on bull, and never get ready for bear, then we are not going to make any money, and it would not be any good. This should be the most important part, and for that reason we are going to end up needing what we can make from it. Hopefully, the best way to get a better result would be just assuming how to make more money during bear run after this bull run.