PolyformUS.com has been manufacturing marine buoys in Kent, WA for over 50 years. I saw a few DIY videos showing that these can function as high-quality aqua bags / teardrop bags. With all the “at-home” training, a 120 lb bag would not cost much from Amazon.
I really enjoy training at Unbridled Martial Arts. The atmosphere is relaxed but also fast paced. We are always doing something new in class, which keeps things fresh and exciting. After class there are always new techniques or variations to reflect upon. In six months of training, I have seen my ground fighting skills improve significantly. I have also noticed a marked improvement in my core strength and flexibility. I feel confident that I am a more rounded martial artist from training at UMA. I would recommend this school to any beginner who is looking to test the waters of self defense and martial arts, and also to more experienced students looking to expand their horizons or cross train. The non-traditional atmosphere is not intimidating to beginners, and is often refreshing to martial artists from traditional schools. The low monthly tuition and lack of contract is a huge incentive to join for a month and see if you like it. The things I like best about UMA are that the class is informal, we train hard, everyone is improving, we have fun training together, and I have made some new friends.