The starch will cool fast to a warm temperature suitable for your body. May be 15 min or so. It help if you put it in the fridge. But you want it warm, like a hot body.
Next how to mount the bitch. Use a standard 5" can, make a hole at the back, make two holes through a PVC pipe, and screw the can onto the pipe.
Pour the lube into the fleshlight and insert the cup into the can.
Finally turn on your fav doggy movie on the desktop and fuck away.
The verdict: it's almost real doggy feeling when you charge. At least you do it really as if someone bent down and you are going to violate her ass.
The return stroke has good suction with lube and all that. But the whole block of fleshlight tend to come out when you are too excited.
I got too excited, twisted a neck muscle, knocked off one c-clamp in the middle of it, and have to hold back the starch with both hands at finish. But it was still like a real doggy finish.
The improvements? Need to have a screen at eye level. My screen can swirl upwards, but still the height and viewing angle is not great.
The c-clamps are secure but need to flatten the pipe at contact so the standard clamp do not slip. The clip type have groove to hold onto the pipe so it was perfect.
You need a cup with a lid. Cut a bit hole in the lid for entry. The lid should hold back the starch, hands free.