Uhmm the idea is to hold the coin who has the more chances to grow in value then (value against each other)... It's like a pendulum, when Hive is really low against HBD is actually good to get lots of Hive by purchasing them really cheap... Then when we have the opposite situation it's good to buy lots of HBD with just a few Hive.... Then if you go through this cycles you will end up with a lot of tokens, either of Hive or HBD... So the key is to be able to ride on several rounds of these cycles so you can have much more token than when you started