@Chris-King It was your original post about the inplay stats at HT that I found interesting but at the moment I only use filters to find selections and I trade those regardless assuming that I am at the computer to actually trade.
There are more games where a goal comes too early than those where at least 1 lay is matched. I try to not let that bother me too much as they do show the selection was ok just that it wasn't at a suitable price.
I did run a 100+ games on the odds simulator (it just supplies random games) and 80 minutes does seem to be a good spot to place a saver. The average price at 80 mins was 1.69. With those random games a lay of 0.5 goals at 80mins gave a 10% ROI.
Anyhow the international break has given me time to do deeper dives into my spreadsheets and the more selective filter does seem far more profitable over fewer selections.
The staking for 1.5 goals has a liability of £2.60 for a full loss.
Using the 80 mins 0.5 goals saver will increase that to £3.29 for a full loss.