GinaB -- the short answer is no, a short VSL will not "bring both hands to the front of my body" -- unless your body is 24" wide! The reason is, we strum the dulcimer mostly at one end, and fret mostly at the other end. I have a couple hundred tunes in my repertoire and from experience, most tunes occur between frets 1-10, with occasional forays up to frets 12 and even 14.
If you have trouble with the instrument bobbing up and down, moving around and such, the solution is probably to be found in how you're setting the dulcimer on your lap. The first thing to do is get your knees far apart -- 16" or more apart. T
The second thing is to angle the dulcimer across your body -- not square across, but angled, with the first fret (more or less) over your left knee (assuming you're right handed) and tucking the bridge (more or less) into your right hip.
Hard to take a picture of your own lap, but here you go. The first photo shows my Bobby Ratliff Cumberland Model with a 20" VSL and you can see the first fret out over my left knee and the right end tucked into my hip. I sit up. and don't hunch over, but I do look down at the fretboard often while I play.
The second photo shows another Ratliff dulcemore, with a 26" VSL (the bridge is just out of picture on the right side. Same wide stance. Same 1st fret over the right knee. Same right end tucked into my right hip.
However, in both cases I'm playing with my left hand moving from my left knee to the middle of my lap -- not from leg to leg.
updated by @ken-hulme: 10/15/22 11:19:21PM