2 stage load assist
I made a 2 stage load assist because I am old, and because my double roller long speargun is hard for me to load.
It looks like this:
When the speargun is at my chest, it is impossible to reach the bands. And if I hold the band, and use my other hand to push the gun up the my chest, I cannot. Even if I use a load assist, the distance and forces are too great. So I made a double. It looks like this:
The variables are the band thickness (stretchyness) and the various lengths of dyneema. I can put the speargun to my chest, and pull the assist so to hook it to the sharkfin. Loading first stage is easy, as the bands are weak compared to the main bands.
After the first pull:
A normal load assist, even when stretched, leaves too large of a distance for me to reach the main bands, but I can reach my next stage easily. After the 2nd pull:
Third pull, I can reach the main bands. By that time the force required is the main bands, but the distance by that time is small. so:
I hope this helps someone. It was a game changer for me.