Fish Emulsion DIY experiences

Hello, I love to bowfish for invasive carp in my local water ways.  Fish waste is a big issue.  I spent a couple years doing a "Fish rotation" in my garden.  I would choose a bed to, at the end of the season, bury a the fish carcasses and plant into it the next year. I would move to the next bed the following year. However, all in all, my soil likes it better when I am doing a cover crop rotation through my garden bed system.  I am want to experiment with making fish emulsion with my fish waste. There seem to be two primary methods out there, the saw dust, fish, and molasses method and the sugar and fish method.  For those that have tried either or both of these, what are your thoughts on which worked better and was easiest to manage.

No one?

Hi Ian, I have no experience dealing with fish but find your project interesting.  How much fish are you dealing with? Does it come in a large load or you have small continuous input? How about testing both methods side by side?

Here is the recipe I have stored away.  But haven't used it.  So no idea if it works best.

Making fish hydrolysate

Just an update.  Following recipe similar to the one posted above we have made a few batches of fish hydrolysate.  Some have turned out better than others. Key to the process is the grinding or chopping the fish to small bits.  When the ferment is going well, I would not say smells "good" but it smells way better than you'd imagine.

Good to hear it actually worked out. The smell thing puts people off but you're right, a proper ferment smells more like cheese than rot. Did you end up diluting it much before applying, or using it fairly concentrated?