I wonder if anyone has fitted a Sliding Rigger to a CLC boat that is too short for a Sliding Seat Rowing Rig?

Here is an explanation of the sliding rigger http://www.rowvirusboats.com/virus/sliding_rigger.html

I own one of Virus's Turbo II milk bottle rowing shells with a sliding rigger and it is very nice to row on a choppy and windy lake (whitecaps optional!). Most of my rowing is done in racing shells on the river in calmer conditions.  

Now I understand that rowers using fixed seat with fixed oarlocks have beaten sliding seat rowers on endurance races, but sliding seat/rigger rowing cured my back problems, and I hesitate to wager my back with any prolonged fixed seat rowing.