This is pretty poor drawing, but the set up looks kind of like this. The red line is where the bungee goes

I See! You just hook the seat to it?  THat is cool! Thanks

I too have been lQQking at Summit and LW climbers.
Anyone have a Summit Broadhead Backpacker?
Cabelas has-em. Folds flat and is $100 cheaper tthen the LW alpha. Money not issue as to comfort and ease to use.
IIs the Viper better then the Broadhead Backpacker? Same price.