So very little weight is necessary to keep fully extended in the anti-turtling sleeve. Using a silicone sleeve large enough to be comfortable but still snug, with a thin (or well stretched) sleeve to hold the sleeve against the base and also hold body heat, along with another shorter heavier sleeve that holds the end and also prevents slipping, as well as a little heat retention, is providing some pretty great changes in flaccid size. I haven't measured erect size since doing this and have only really had one full glory erection since trying this, but my wife said I was "really fucking long" so hopefully the ruler will agree the next time I do a measurement.
The thick sleeve I'm using at the end carries enough weight that when junior starts to heat up it pulls it down and I can feel the gentle tug when I'm walking or moving. This is exactly what I was after. Something comfortable to wear all the time, fairly easy to remove to pee, and enough extension that any "cementing" is at as an extended a state as possible. As it relaxes and warms up, everything moves down about half an inch, so I pull it snug up against the base, and within about 20 minutes or so it's hanging mostly flat and can easily be worn in public with baggy clothes.