I've been bearish the last week or so, looking at the orderbooks primarily to show me where the whales want to push the price. Sometimes it could be spoofing, other times it can be legit selling or buying. Combining different exchange liquidity can help to give an overall picture. Here is my analysis on youtube should you wish to see it -
https://www.youtube.com/watch?v=OPdumALVaQkScalping is really hard and I see it was not a profitable strategy in a volatile coin like BTC. I see a lot of market analysis, in fact, I have mine but most of the time I fail to be on perfect timing, and usually, I lose. If we only use Bitcoin for trading, scalping is not good but I see it was effective for altcoins where whales have so much participation.
Scalping can be done when we have a lot of time to spend on the computer but for those who have limited time, short-term trading could be the best choice. Both of them are profitable (or even not) as it will depend on the traders.