NautilusCairns
Contributor
For what it's worth I use a 40 inch miflex hose underarm with a Scubapro 120 swivel. I've tried a number of different configurations and this has been the most comfortable so far. I also use an Aqualung Airsource3. My SPG is on a 26 inch HP flexible hose underarm clipped off to a SS split ring I put low on the left shoulder strap just above the waist strap. I found a 24 inch HP hose with a single tank just a little too short to see the SPG easily. I can see that an over the shoulder SPG arrangement could work and I may try that some day.