I went out on the course today, and tried a sitting forehand. My legs were straight out in front of me, so they were somewhat in my way, and after three throws (anny shanked the first two into the ground), my third was 110'. I've never tried this shot before, but I think it illustrates that someone with some work could pretty quickly outthrow the hundred foot range.
By the way, for no good reason whatsoever, my shoes are almost exactly 1 foot long, so when i paced it out heel-to-toe, that 110' measurement is pretty darn accurate (to within probably 2 feet).
The throw was also very slightly uphill, in 4mph crosswind (so probably had no effect on the shot), done with a 180g moderately beat-in Champion Roc3 thrown on a bit of an anhyzer line, which faded back to a decent flex. I'm a predominantly backhand thrower, but my forehand has better range in a restricted space... which I now know to be about 110'.
I wrote all this to say... I feel confident that you can get more distance from a sitting position. Unfortunately, or maybe fortunately, depending on how you look at it... I think the only way it's going to happen is practice.
I didn't try a sitting backhand, but may the next time I'm out.
Keep throwing. The distance will keep improving. :thmbup: