Thanks caves4me for the heads up on the SMS75 by Hollis. I have got to get some practice. Right now, my journey with side mounts cannot begin, since I must first get some training. So, I am wanting to make plans to travel from NJ down to FL and take some lessons. I got the SMS100 dual bladder with the regulators as a kit. Yes, I bought the side mounts. Yes, they do no good on the shelf. I better get going on using this.