Not to be an A$$ or anything but this can be dangerous. Clouds aren't in & of themselves dangerous, but you have to think about what it can mean if the FEDs ever saw this.
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgFAR.nsf/0/4042af61b56f7feb86256eec006d3ccc!OpenDocument
Sec. 105.17
No person may conduct a parachute operation, and no pilot in command of an aircraft may allow a parachute operation to be conducted from that aircraft—
(a) Into or through a cloud, or
(b) When the flight visibility or the distance from any cloud is less than that prescribed in the following table:
Like I said, I'm not an experienced jumper, but from a pilot's perspective, you could really get him/her into some $hit if the Feds found out jump ops. were done through a cloud deck.
Just something to think about.....