A weightable hoop system comprising: a single bodied molded hoop comprising: a first annular volume; a second annular volume located adjacent to the first annular volume; a third annular volume located adjacent to the first annular volume; a threaded input member in fluid communication with the first annular volume; and where the first annular volume is not in fluid communication with the second annular volume and the third annular volume, and the second annular volume is not in fluid communication with the third annular volume. A weightable hoop system comprising: an outer single bodied molded hoop comprising: an outer surface; an inner surface; an upper groove located on the outer surface; a lower groove located on the outer surface; a first annular volume that is not in communication with the ambient atmosphere; an inner single bodied molded hoop comprising: a first end and a second end, such that the inner single bodied molded hoop is not a continuous ring; a top; a bottom; a second generally annular volume; a threaded input member in fluid communication with the second annular volume; a first flange located at the top; a second flange located at the bottom; and where the first flange and second flange are configured to attach to the upper groove and lower groove respectively via an interference fit. A weightable hoop system comprising: a single bodied molded hoop with a top and a bottom comprising: a first annular volume located at the top; a second annular volume located at the bottom; a pinch seal located between the first annular volume and the second annular volume, and preventing fluid communication between the first annular volume and the second annular volume; a first threaded input member in fluid communication with the first annular volume; and a second threaded input member in fluid communication with the first annular volume.