I am short S&P and really hoping it will continue to drop, but there are other possible trades on the FTSE for Monday that might suggest extending or reducing that position. I will give below what I have identified as possibilities, though some of these are a bit rash; for myself I do not intend to be long on the FTSE while short on the S&P, nor long on anything which is in a downtrend -
Swing long - if Friday's high breached but low holds.
Whiplash long - if we open below Friday's close but close up on the open, in top 50% of range.
Whiplash short - if we open above Friday's high but close down on the open, in lower 50% of range.
3-day unfilled gap reversal long - if Monday's high is below Friday's low, place buy order just above Monday's high, valid for 3d.
3-day unfilled gap reversal short - if Monday's low above Friday's high, place sell order just below Monday's low, valid for 3d.
Key reversal long - If Monday's low below Friday's low, but closes above Friday's high.
Key reversal short - if Monday's high above Friday's high, but closes below Friday's low.
80-20 long - if Monday's open below Friday's low, buy if price breaches Friday's low.