Ihad the same idea a couple of years ago. We called all around looking for thin foam for layers and found some but very expensive. We gave up the idea. Ibought one of these layered ones for $30 this year at menards. WE use it strictly for checking broadhead flight. The best targets for fieldtips are bag targets such as the ones put out by delta. They stop the arrows great and arrow removal is two finger, These last foreever too. We had a block shot out in two months after buying it. We were not impressed.