When they delivered my Jacuzzi on Monday, as they "eased" it into the opening in the deck (I use the quotes very intentionally as it seemed like a pretty primitive process), I heard a cracking/crackling sound. At the time I couldn't bear to watch so I just walked away and let the 2 delivery guys and 4 additional guys on my landscaper's crew handle getting it where it needed to be. They got it in, none of the deck structure seemed damaged and I checked it as best I could.
The next morning, I asked one of the landscaping crew if he heard the cracking too and whether he thought there might be damage to any deck wood or the tub itself. He said no, he didn't think so, that the hot tub is built to withstand a lot. Then he pressed on one of the skirt covers and it made a similar "crackling" sound when flexed in and out, so he said that it was probably just the sides flexing when they moved it over the edge into the opening.
Should I be concerned over this? We got the electrical hooked up yesterday but the tub isn't filled yet so we have not turned it on at all. Today I'm going to try to get into it to clean the inside and we're planning to fill it and heat it this Friday/weekend.