Those are good tips. Thanks.
Questions:
1. Would the boat be moored on to the Hyde wreck and we just descend along the mooring line?
2. What would the water temperature, current, visibility be around early September?
There will be a bar hanging at 15 ft under the boat. You step off the back. Follow a rope down to the hang bar, then follow the hang bar for say 25-20 ft. Then there is a rope that runs to the anchor line. Follow anchor down to the wreck. Anchor will be attached somewhere on the upper deck. Note where it is for your return. Just reverse process for return. Do your safety stop at the hang bar. Then go up and grab the trailing line (bright yellow). Signal all OK and wait for your turn to board. Make sure the person in front is completely aboard before you start. People do slip some times.
In Sept the water temp should be high 70s, maybe low 80s. Lots will be diving in 3mm. Some 5s. Some in shorties. In early Fall there is one group that dives in just swim trunks but I like some protection in case jellies show up and I swim slow and do not generate much heat.
Current is rarely an issue on the Hyde. There is sometimes a bit of surge but that is not that common If there is any current you can run your dive on the down current side of the boat. I have probably 30 or more dives on the Hyde and I have never see current bad enough that it made going up or down the anchor line any kind of issue.
Visibility varies. Has there been a recent major storm to stir things up? Has a large piece of blue water come in off the gulf stream? I have seen it all the way from 10 to 100. It is not always the same top to bottom. I have seen heavy murk up on top and then open up nicely as you approach the wreck. I have seen great viz from top down to about 70 and then a murk layer. So you mostly dive the top two decks which are above the murk. But typically that time of year with stable weather you should expect 30 or better. Sometimes you can see the wreck before you descend.
If you are comfortable with that sort of thing there are a couple of nice swim throughs, rooms open to the outside etc. It is a dredge so there is a big hold that you can drop down in.
Lots of fish life. Two weeks ago I identified 31 different fish on the Hyde (personal record for me) and there were some I did not know. Look up and around from time to time. Lots of stuff comes swimming by high up.
Probably will be some sand tigers around and once in a while a sand bar. The sand tigers are docile unless you are carrying a dead fish, but they make great photos to impress your friends.
If you have a good eye, and like that type of thing, you can sometimes find some SMALL fossilized shark teeth in the sand washed out areas. I can usually find a couple if i look.
Have fun.