Maybe you could do it but you need to have a huge capital for example you could get a small profit and fix the amount that you want,
If you want $50 then it depends on your capital for example 1% profit in $5,000 but again it would be risky specially in this market.
I think it's works well with people that have high balance because they can buy bulk coins then sell it quickly if it reach at least a good short wide spread. The only downside is it's super risky if you try that with big amount. Maybe you just need to practice at low balance and try if you can profit. Then just try with high balance if your are confident and not afraid to lose.