Yeah - but you can't see what the guys were talking about above. It is important that the bunji provides upward force on the dogbone (or ring....whatever) when the system is at rest. That way if you are in 'almost' trapeze conditions and you are sitting on the hull but hooked in with intent to pop out on a moments notice - the bunji helps keep the dogbone pulled upwards and engaged in your trapeze hook. It is unclear in your original drawing if the bunji does this but this site does sell the complete trapeze kit (including v-jam cleat and handles) that is close to what you have drawn.