Gibraltar makes a bass drum anchor that mounts to the front hoop - Gibraltar part # SC-4402. These anchors work very well as long as your bass drum is on carpet. I still have several of the anchors that were manufactured by the Ludwig Drum Co. years ago, and they still work.
Although the anchors work very well, I have found I do not need them on my newer kits. Most newer bass drums have spurs that are designed much better than the old ones. Once again, they work if you are on carpet. Just don't set up on a bare gym floor or any nice wood floor without a piece of carpet under the bass drum (or whole kit). The spurs and the add-on anchors have rubber tips, but they are not as effective as the spiked ends.