The concept you are talking is called jobbing .
High trades with small profit and loss.
we trades on this concept , we trades daily 200-500 trades daily without chart, only basis of best 5 buy/sell window.
it is simple term , ENter in trades , if it comes to loss cut it , if it runs to profit hold it .
ex.- I mostly trade in option . Bank nifty option , i choose option pre imum around 100-150 for trade,
call/put does not matter ,
if i am bearish on banknifty then i will short call or buy put .if it is expiry day then i prefare to short call cause of time decay .
suppose 30000 ce short @120 with 400 qnty if it comes to 124-125 i cut my position . and wait for next trade. if it come down to 115 i will ready to cut my half position , There is two situation will be,may be it will go down or reverse
we consider Reverse first. if price 115 move to 118-119 i will cut my half position and wait half for 124-125. if it hit then i will exit and out of trade.
If it come down to 115 to 110 then i hold trade and ready to cut half postion around 115 if it reverse . If not then same situation for 105. but i will cut my 75 % postion around 100 cause of 100 is psychological number .
thats it , we will do this kind of trades daily , high number of trades and small profit and loss .