Okay, yes I am still trying to start an MMA/Grappling club at my college. It is proving to be significantly more difficult than any of my classes. So I talked to my school's Taekwondo club about using their mats. They are a very large group on campus and they have 150+ 3' by 3' interlocking mats that they set up for their practices. They are around 3/4 of an inch thick. Today I had a chance to roll around on them a bit/do break falls and they are obviously not meant for grappling of any kind. They have very little give in spite of their thickness. We could probably roll on them okay, but even doing forward rolls (not to mention break falls) was pretty uncomfortable. With that in mind, one option might be to set up a layer of thinner cheaper squishier puzzle mats on top of the TKD mats. I know that people here don't tend to recommend puzzle mats, but in my situation would they be a good idea? Are there other options for cheap thin mats that might work? I would really like to be able to do takedowns/wrestling stuff comfortably. And obviously budgeting is a problem. The university will give us no money and I would love to be able to cover over a 27' by 27' square of TKD mats (enough area to run a club with 10-15 people). That is a fairly big area and while fundraising might be an option anything more than 500$ would be a stretch. Given this financial constraint is this even a valid idea in the first place?