I am impressed with the speed in which the spin comes down with the sngle line system (I had my doubts about the single line system to start with) and three patches. I am guilty though of not watching the spin when it comes down when I am solo because I am looking at the snuffer line and I haven't sailed it enough yet with crew to necessarily watch thespin getting stuffed in that situation. The single line system helps I thinnk because when you release the halyard cleat the tack line pulls out automatically putting tension on the snuffer line and also lets the spin fly up a little rather than down.
I see how a little tension on the snuffer line might help but as soon as you release the halyard that bungee is going to be worthless due to the pull on it anyway. It would be ideal to have a little resistance on the halyard when snuffing but I don't know how you could rig that type of system up but I will think about it.