Yes, sure you can use 
Hive account@whalebuilder for bidding as well. The rules are the same. You will be considered separately for delegations and bidding sweepstakes. You will also receive a share from the 50% bots payout as already described only if you have a delegations towards Hive account@whalebuilder
RE: 100% + 50% returns for delegators of @whalebuilder starts today! First snapshot taken. . .