Dead Island 2 Faster Bhops (description for details) 

I rebound L1 to sprint and Square to Aim Weapon, using the PS5s rebind feature for controllers.
Much faster method, not too much harder.
Part One - Basically you want to sprint, slide, tap jump and aim together and tap sprint straight away. If you don't tap sprint straight after you leave the ground you won't be able to slide afterwards.
Part 2 - Then you hold slide and as soon as you hit the ground you tap aim and jump together and tapping sprint right after again.
If done correctly you can repeat Part 2 over and over until you come to a stop.
All together it will go like this.
Sprint - Slide - Jump and Aim - Sprint - small wait - Hold Slide - Jump and Aim - Sprint - small wait - Hold Slide - Jump and Aim - Sprint - and so on.