This is an age old discussion.
Ernie is right. There is no excuse for not having the gear system in good operating condition including the power pack and especially the solenoid valves.
If there is a leak or if the doors do not stay closed after a day or two the aircraft is trying to tell you something.
Since there is little drag with the gear down then why not put the gear up at a sensible altitude when doing a cockpit cleanup.
I never put the gear up under 500 ft but that is my operating proceedure. I prefer to pay attention to more important things such as possible engine failure.... or dodging birds.....
The mod is one of those things that give you a WARM and FUZZY fealing and definately reduces the weight of your wallet
Bob