Test Matches Update

Hello and welcome to our 1st post of this year.
Australia v India test match timings are not suitable for me so not doing much trading in this match.
But if i trade on 2nd day from start then my plan is:
1.Lay Aus 1.2x or below when India comes to bat upto 3 wickets.
2.Back Aus 1.8+ or lay Draw 2.2x if comes before tea.
Plan is simple go with bowling team (Australia>when India comes to bat) who is strong favourites at 1.8+ if comes and then wait.Because even if odds drifts upto 2.3x only one wicket is required to bring back odds in 1.8x zone.
.................
South Africa v West Indies:
West Indies 240/8 at stumps on day 1.
Odds are SA 1.36 as favourites.Is SA at 1.37 a free lay and what is ROI?
Before doing anything just analyse conditions in which SA odds may drift:
1.Bad weather.
2.Big partnership for 9th and 10th wicket.
3.Early wickets in SA innings.
4.Very slow run rate in SA innings.
I think 1,3 and 4 is possible and 2 is unlikely.
So imo small lay now at 1.37 and consider lay around 1 30 when SA comes to bat as free lay.
I will try for Inplay post in South Africa match.

All the best.