I am pretty disappointed with the manual gear oil pump I purchased this year to fill my Bravo 1 drives.

Looking for recommendations on what other people are using that is simple quick and clean.

I got one on here cpl years ago. It is just a pump sprayer like garden type. Works great. Probably build one pretty easy if you have parts.
Somebody probably has link.

1 gallon garden sprayer with the drive attachment from your pump kit attached to the end. I put about 3 quarts in the garden sprayer and watch the level as it slowly fills the drive. I'll even walk away for 2-3 minutes and do something else when it first starts to fill.

Here is what I use (bottom of link). Holds 3 gallons. I like the quick disconnect fitting that oil cannot pass through without the hose end attached. Do note that due to the diameter of the quick disconnect fitting you have to remove the zinc that surrounds the propshaft on Bravo I drives.

http://www.stevensinstrument.com/gearcase.htm

Here is what I use. 30 pumps fills a Bravo and 60 pumps fills an SCX.

I bought a hand pump thing from wherever (WalMart, Marine Max, etc.) I bought a cheap garden sprayer & pit the hand pump end on the sprayer end.
Basically buy the 2 parts + a small on-off ball valve, 2 hose barbs and adapters (all from Lowe's/Home Depot) put them together & you've got yourself a drive-filler-upper.

Search "garden sprayer" here on OSO. It's been discussed several times.

And 180 pumps fills a wet #6.
Good pump; btw, Mr Gadgets sells these complete with all fittings.

Not to get off topic but How is SLIM liking the swells out in the Pacific?

Sweet pump! If I only had drives to fill.....