Not enough coverage, ends: I made a couple of end caps, sort of shaped like an ice cream cone and just covers the ends of my hammock. Helps with any wind blown rain that comes through the ends.
Not enough coverage, sides: My underquilts are made with DWR nylon so I don't worry so much about the bottom of my hammock getting rain splash up from the ground. I will also set up my hammock & tarp lower on the trees so I'm closer to the ground if the weather is crappy.
Getting Dressed: a difficult chore!!! Especially when the tarp is in storm mode! I flat out can not get undressed outside under the tarp if it's in storm mode. I've got to stake out one side and somehow get it done. If I'm already inside my hammock, I can change clothes there. But wet clothes will come off before getting inside, even if I have to just drop them on the ground (eeek) or sling them over my hammock ropes. These are things I still need to "practice" more of, in the back yard
Tarp not seam sealed: didn't bother me, I've bought tarp/tents, espensive ones too, that were not seam sealed. I sealed my clark tarp when I first got it.
Getting into the Clark w/tarp in storm mode: This is done CAREFULLY I stake out the middle tarp ropes so the inside middle of the tarp isn't right on top of me. Makes it look kind of like a fat middle, pinched ends, taco!!
The more I practice in the rain, the better I get at doing some of these things.