It depends on how much your hashing speed you have. If you have at least 10% of global Hashrate, you may better with solo mining than pooled (-
it also depends on block reward and block time). If you have more than 25% of Global Hashrate, you've better to do solo mining.
It means you need to collect some coin technical info, so you can calculate using your own way to make an estimation profit (
comparing between solo and pooled mining), Then what kind info you need?
block time,
block reward,
Diff & Global Hashrate,
and another technical info that you can find (X info).
Implement that info into the current coin that you were asking (IFX), so you were able to calculate the estimation, which was better between pooled or solo.
Solo mining was possible a few years ago. But nowadays it's not as profitable as it was before.
Which coin are you talking about?