Speaking of velocity, you can also prefer to just sell your Hive for HBD in internal market and take the HBD to Upbit to sell for Hive. Obviously you pay a trading fee twice over there (HBD/BTC, then HIVE/BTC) but I have observed the difference between HBD valuation by Hive internal market and Upbit to be highly one-sided (pretty much 24/7).