Mike, Block Island -- Greatest average depth
100 feet !?!.... I think you mean 10 feet.When I go to block island, I usually sneak up towards the dinghy beach on the eastern shore of the salt pond and its 6 feet at low tide (~11 feet at high). (I have a 4 1/2 foot wing keel)I've been sailing LI Sound for years and rarely do I anchor in anything over 20 feet of water. and I rarely do I have to put out more than 100 feet of rode. In fact while you are in Block Island you will be hard pressed to put out much more than as it gets very crowded in thereI have been very successfull with my 44lb Spade anchore and only 15 feet of chain (5/16 HT chain and the rest 5/8" 8-Plait rode---> I know, I know..... I should have more chain - just never got around to it and this set-up has been working very well for me and when it looks like I want more weight on the rode I have a 18lb sentinel that I can drop down the rode -- seems to work well -- and I've been in a few good squalls.PS -- remember to put out enough rode for the high tide as 30 feet of rode would be adequate for a 6 foot depth (5 to 1) but at a high tide swing in some places of 8 feet which would bring you to 14 feet then that 30 feet of rode would only be a 2 to 1 ratio -- and you'll probably be drifting away at high tide. I see power boaters doing that all the timeJust a FYI - I have a 36 foot Catalina and its probably at least 16-17,000 loaded.