Originally Posted by FBinNY

All the above suggestions are good, but not necessarily on point for you.

The key to a solution is considering the specific causes of your flats, ie. punctures through the tread, pinch punctures on the sides, or punctures on the rim side of the tube.

Once you know how and why you're getting flats, you'll be able to take corrective action.

BTW you didn't mention where you live, which may matter. If you live in the southwest, you may be the victim of goathead thorns. If so, Slime may be your best friend.