Baller SundevilSki Posted January 17, 2017 Baller Share Posted January 17, 2017 [Moving this here from boat talk] Long story short, we've been fighting with our ramp for a while and i'd like some ideas on how to anchor it so it wont move. We have a very unprotected site and have some strong (40mph) crosswinds from time to time. The last anchors we had in place were 4 plastic tubs filled with ~400 pounds of concrete each, on each corner of the jump. Our lake level fluctuates about two feet several times a year and last time we had the jump in place, we think the lake level went up and pulled our anchors out of the mud (we have a deep muddy bottom) and the wind started dragging the jump around the lake. What is the best way to have the jump in a permanent position, while still allowing for lake fluctuations? Link to comment Share on other sites More sharing options...
Baller_ Bruce_Butterfield Posted January 17, 2017 Baller_ Share Posted January 17, 2017 For a muddy bottoms, danforth anchors work great https://goo.gl/WwB6rr I think mine are the 24" version that are $40-50 each. Just need to set them by digging the prongs in and being sure the angle is reasonably shallow. They have more holding power than you would think. If it was easy, they would call it Wakeboarding Link to comment Share on other sites More sharing options...
Baller Bainesster Posted January 18, 2017 Baller Share Posted January 18, 2017 woah 400 lbs anchors getting moved by the wind, and I thought salt water could not melt steel cables Link to comment Share on other sites More sharing options...
Baller paul Posted January 18, 2017 Baller Share Posted January 18, 2017 we have 1200lb concrete anchors (4'X4'X1') tied to 3/4" poly rope. The rope is 150ft long and we are in 20' of water. This gives us a very shallow anchor angle. We also have tires between our winch lines and our poly rope for shock absorption. To get the anchors into place all you need to do is pour them on a dock, put some pipes under them once they are dry, float them into place and push them off the dock. Cheap and they are not going anywhere! Link to comment Share on other sites More sharing options...
Baller Nando Posted January 18, 2017 Baller Share Posted January 18, 2017 We have large screw anchors- the type used to anchor mobile homes- 36" long, with 12" diameter augers. We screw them right down to the bottom (it's pretty firm). I also used these for a cable course. Kind of a pain to install in deep water (you'll need scuba) and your fluctuating water level will still require adjustment, but with these on three separate lakes, we've never had a jump move. Link to comment Share on other sites More sharing options...
Baller LeonL Posted January 18, 2017 Baller Share Posted January 18, 2017 We use screw in anchors. We did have one pull out during a really significant wind, skirting edge of a hurricane. Other than that we've had them in for 19 years. If you go with a really shallow angle of anchor line, you have to be careful when getting the boat near the jump. Link to comment Share on other sites More sharing options...
Baller SundevilSki Posted January 18, 2017 Author Baller Share Posted January 18, 2017 We have a lake liner so screws are a no-no, and there also are no floating docks on our lake. Link to comment Share on other sites More sharing options...
Baller SundevilSki Posted January 18, 2017 Author Baller Share Posted January 18, 2017 Can anybody comment on using large pyramid-type boat moorings? Link to comment Share on other sites More sharing options...
Baller Nando Posted January 18, 2017 Baller Share Posted January 18, 2017 What kind of liner and how much sand/fill is on top of it? Depending on how much soil there is, you may need some sort of flat anchor so that it's buried. On a plastic liner, keeping them from getting dragged will be tough- as you know well... Link to comment Share on other sites More sharing options...
Baller Edbrazil Posted January 19, 2017 Baller Share Posted January 19, 2017 Here is what we typically used when Tour-ing. 4 anchors at about 1,000 lbs. each. Make forms from 2x10 12-footers. Cut into 4 equal pieces, and bolt together as a square. One 'yard' of concrete makes 4 of them. For lines, use 5/16 braided nylon or 3/8 poly. Only failed once, in a 2 mph current and when a boat threw a big wake at the ramp. We also used to 'pin' them to the bottom with big tent stakes, but looks like that won't work since the bottom has a liner. See the picture for the layout. When not in use, slack off the front anchor cranks a bit, in case the water level comes up. Link to comment Share on other sites More sharing options...
Baller coledimich Posted May 30 Baller Share Posted May 30 @Edbrazil Any chance you still have the diagram that you posted in your comment above that shows the anchor layout? It was really helpful when I used it a few years back to get our new ramp sorted out but it seems like the image is no longer available in that post. Been scouring the internet for it and can't find it anywhere else. Thanks! Link to comment Share on other sites More sharing options...
Baller Broussard Posted May 30 Baller Share Posted May 30 @coledimich Unfortunately Ed is no longer with us to impart his vast knowledge. . Link to comment Share on other sites More sharing options...
Baller coledimich Posted May 30 Baller Share Posted May 30 @Broussard Thanks for your reply, @Onside135 just messaged with the sad news. I've sent @Horton a message to see if it will be possible to recover the image and tap into Ed's knowledge once more 1 Link to comment Share on other sites More sharing options...
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