You DIY sounds great but I wouldn't want a smelly scooper inside my MH or would I ever bring the poop inside to put down the toilet! :B
This is IMHO the best simple poop scoop. REal tall handles so there is no bending down and a simple pan and simple scoop that puts the poop right in with one flick.
So Phresh Easy Pick Up Small Spade & Scoop Set
Less bending over
Rust-proof finish
Works great on gravel, grass and pavementhttp://www.petco.com/shop/en/petcostore/so-phresh-easy-pick-up-small-spade-and-scoop-setI put a small plastic bucket down next to the MH with a grocery bag inside. The poop goes into the plastic bag, then flip one side of the handle of the bag over and then off it goes to the CG dumpster on my next walk.
I also have another small bucket filled part way with bleach/water solution to put the scooper set in. The bucket holds both scooper parts upright AND keeps them smelling clean.
When traveling the scooper goes into the MH back bay. Since it's been sitting in bleach it is clean and doesn't smell.