Edited out at John's request , bogus post.

As long as the total is not more than 90 during any 180 period you should be OK. They can see by the long periods out that you are not one to target (hopefully).

I think the rules are that you can stay 90 days in a 180 day period. If you leave for 30 days at a time and stay 30 days you should be fine.

to avoid the trouble, apply for 1 year extension since you are married to a Thai