This is a simple-to-build, inexpensive (assuming you already have a drum kit), road-tested mechanism which converts a regular hi-hat stand into an effective snare drum beater. It would be simple to adapt for cable hi-hat for more versatility.

I use it on a snare in conjunction with a kick drum - I've gigged with this setup consistently for the last 5 years, in duo

and trio situations playing electric bass (and sometimes tuba), from front bars to festivals, and it is a very reliable, musical, usable rig.

All foot-controlled snare solutions I've seen involve rigging a snare drum on it's side on the floor and playing with an adapted bass drum pedal. One thing I really like about this is that the snare is played in it's normal (horizontal) playing position - the snare wires are interacting properly with gravity, and the proper stick for the drum is hitting from the right angle to get the most out of the drum.

The dimensions of your drums and hardware may vary slightly from mine, so a couple of different measurements must be made, specific to your hardware. Additionally your hi-hat stand must be able to be adjusted so that it's top collar sits lower than the top of the snare drum.