just put our tub in a month ago. added onto the deck and was going to build a gazebo/ pergola type thing, but i really like the open sky at night, so i bought a 10' overhanging umbrella like the first poster here. works well. here in SE VA we are approaching bug season. i for any one interested, i found a freestanding gazebo at home depot that even has mosquito netting with it for $200. its 10'x10' and 9' high, and i think was designed to go over an outdoor table. am going to pick one up today as a matter of fact. will post some pics in a couple of days.....if you want to look at the catalog shot, go to homedepot.com, search for gazebo (only 2 of them,1 is $189, and 1 is $199) and check it out (the $199 model).
i figure worst case, if i dont like it over the tub, i will put it over my table on the deck....