Ok,
Appreciate the advice guys. Just wanted to give a little more clarity on why i even made this post.
The main reason that i don't want to get a PF Electric Reel, or a Waterworks Powerup Reel is because if anything breaks, they are so over engineered to perfection that its difficult to fix for somebody like myself who is not the best at DIY. I would have to send the reel back or drive a 4 hour round trip just to get the reel fixed. This is way too much aggro.
The reason why i prefer the DIY Electric Clabber Reel that i made is because i built it, so if it breaks i know exactly how to fix it in minutes.
Cost is not the issue here its more downtime or faffing about if an Engineered reel breaks on me.
Infact i think i am more tempted to go with Adams idea, and just use a Manual Clabber Reel instead. I only got the electric reel originally for my own ease when working. My best friend currently works in my van and he is fine with using the DIY Electric Reel, but as mentioned the issue is when i get a new employee where the concerns arise from.
At this point i think i would rather either Keep the DIY Electric Reel and just hope for the best, or get a chain guard fitted somehow myself. Or just swap it out for the Clabber Manual Reel.
I have written a waiver, but clearly from what all of you are saying, it really would not stand up in any legal sense should there be an injury.