I've changed my engine oil, trans, and V-drive fluid a bunch of times with a "Tempo" vacuum pump that is available from Boater's World, Overtons, etc. Here's the set-up for changing engine oil using the E-Z Drain hose that your boat has:
Here's what the hose connection looks like:
The end of one of the Tempo hoses has a female garden hose thread connector on the end (the large black plastic piece in the picture above). In order to connect the E Z Drain hose to it, I screwed a bushing into the E Z Drain (the iron piece in the picture below), and then screwed a pipe-thread-to-garden-hose-thread adapter (the brass piece in the picture in the picture below) into the bushing. When I'm finished changing the oil, I screw the garden hose cap onto the end of the hose, and it's sealed. It takes maybe 10 minutes to drain the oil.
The Tempo also comes with a smaller hose, and it fits into the dipstick/fill holes in the trans and V-drive to suck the oil out.
Of course, it's best to get all the fluids up to operating temps before trying to suck them out. Also, I heat up the oil that I'll put
into the V-drive because the fill hole is small, and it takes forever to get cold oil to go in. I heat it up by putting it in a bucket of hot water. You also can get a quart-size oil pump from an auto supply store (the kind used to pump gear lube into a differential), and that really makes it easy to get the oil into the V-drive.