Lindsay had an opening round of 67, four under par, over the old course at Moray to lead the field by a single shot going into the second round on Tuesday.
He got off to a great start with an eagle three at the par five second hole and a further six birdies in the round at holes 4, 8. 9. 11. 16 & 17 which would have been sensational had it not been tempered by double bogey sixes at the fifth and twelfth holes.
After the two qualifying rounds the championships progress into matchplay which will take place throughout the week, culminating in the finals on Friday
Other Ayrshire scores:-
New Course - (par 70)
Jack Broun (Ayr Belleisle) 72 (+2)
Cameron Johnstone (Troon Welbeck) 74 (+4)
Sean Addie (Ayr Belleisle) -75 (+5)
Ewan Milligan (Kilmarnock Barassie) 83 (+13)
In the girls event, Rachel Foster (Prestwick St Nicholas) and Louise Duncan (West Kilbride) lead the Ayrshire challenge after the opening day, finishing tied fourth on three over par, Foster having carded a 78 over the Old Course and Duncan a 74 over the New Course.
The only other Ayrshire player in the field, Claire McLaughlin (West Kilbride) had an 89 (+14) over the Old Course on the opening day.