Again with 'da fridge slide question

Hi All again

Another annoying fridge slide question. I do not wish at this stage to have the full on draws and fridge slide system installed in my 60 series as my day to day work and budget will not cater for it.
However after purchasing my 40 litre Engel 10 months ago I have only used it twice and discovered what a pain it is to physically pull a full one of these things in & out at campspots.
Has any one fitted a fridge slide ONLY and if so how do they find the genuine ENGEL item and how have they mounted it to the floor of the vehicle.
I would also like to be able to remove it relatively easily between trips as I carry a lot of heavy electrical cable drums and tools for my work and do not wish it to get too badly damaged day to day.

I was thinking of cutting a piece of MDF to fit the back of the cruiser and screwing/bolting a slide to it and therefore being able to remove the whole thing in about 10 minutes.

Wahddya all think
Andi