Here's an old pic of the trimmed down version of the BH dolly. I used one large and one small dolly to keep the footprint as trim as possible
You can somewhat see the tie down strap across the two stiff leg pads to hold them up and in place. You won't need extension hoses, the stock ones are plenty long. With the Hoe on a dolly, you can have the hydros attached to curl the bucket, lift and lower the legs etc.
Make sure to turn the tractor OFF, and release all pressure by moving each control lever each way, BEFORE you attempt to undo the hydro fittings.
This site has a wealth of knowledge about anything you wish to do, try, or dont know about. Just ask! That's how I got the original measurements to making my Dolly's for implements. Once you do one, you will figure out the rest. I keep my hydraulic attachments indoors, but land plane, and cultivator are outside.