Hi pozmu! Thanks for checking!

1. We do not offer selection of mining pools, but still you can check numbers on, let's say, btc.com pool (that's the pool we mine at) and see that this is the very same amount you get on FlyMining. We did our own research and btc.com pool was the one consistently paying a little more than other pools

2. We tried it, but it proved to be less profitable because it comes at unreasonable expense of lowering BTC output. Do you have an example when merged mining is more profitable?

Thank you!