I have an 05 Venom chopper. My oil
tank does not have a drain plug like yours, I assume. I went out and bought a cheap wet/dry vac and modified the suction end of the vaccum hose using a pvc fitting to accommodate 1/4" clear tubing just a little longer than the depth of the oil
bag through which I suck the oil
out. It takes minute to get the suction going but once it starts you get all the oil out real fast. It is a bit more messy than having a drain plug because of the suction hose but the option of regularly disconnecting a oil line I feel is not a good idea due to the wear it will eventually cause the tubing fitting. I allow the the suction hose an hour or so over the vaccum tank to allow any excess oil to drain out of the hose.
I take off the oil filter with an oil filter strap wrench that attaches to a 3/8" ratchet. The strap wrench can be purchased at any auto part store. The single down tube and the lack of clearance between the filter and the engine case makes it difficult to use any other type oil filter wrench. Oil drip during removal? None. Once I get the filter loose I take a small plastic bag and wrap it around the filter for final removal by hand.