To make more profit, my advice is that you should join the bounty campaign instead of airdrop if you have time. Participating in a bounty signature will have the opportunity to earn up to $ 5,000 if you choose a potential ICO that can participate in the bounty.
You can participate both if you want, whether when you are using multiple accounts in bounty campaigns it is actually against the rules and regulations of their bounty.
If it's againts with rules why you still give that advice to him? All campaigns don't allow people using multiple accounts as it's a cheating.