What is the use of the third leg of long futures why not take buy a call instead
sach
Becuase 1) future is not time-decaying asset like option.
2) Better predictabilty of price movement. Future has delta of close to 1 for any variation in underlying's movement.. i.e. for any 1rs move in underlying, future will also move by approx 1Rs. This is not the case with option because its delta will change based on deep ITM, ITM, ATM, OTM, deep OTM relateive to underlyings price
3) One can apply Technical analysis on futures price which is not the case with option.
Happy Trading.