I have a Sony SPK-DVF5 for sale on Ebay right now. It's a great housing for tube shots and gives you full zoom and record control.
Fits many Sony models including:
DCR-TRV6, 8, 9, 10, 11, 15, 16, 17, 18, 20, 24, 25, 27, 30, 38, 39, 40, 50, 60, , 70, 75, 80, 900, 940 and 950. It also works with the HDRHC1 HDV Cam.
I used it with the TRV950 and also some with the HDRHC1.
Check out the full description HERE
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7630024685