The question we are asked most frequently when cottagers are considering the purchase of an Otter Island swim raft is "How do I anchor it?"
The Otter Island swim raft can be anchored at one end only or at both ends. Connecting the anchor to both ends will keep your raft from rotating in the wind and allow the anchor block(s) to be positioned out of the way, under the raft.
To connect an anchor we recommend that you purchase an anchor connector kit which has been specifically designed for the Otter Island swim raft. Alternatively, if your lake is relatively calm with little wave action, you can use inexpensive components that are generally available in cottage country.
Here is what you will need to connect the raft to an anchor on one end only (double the quantities if you choose to anchor at both ends):
There are 4 lugs on the underside of the Otter Island, 2 at each end. Install the eyebolts using 2 washers and a lock nut. Install a quick link on each eyebolt.
Connect the two eyebolts with the short length of chain and tighten the quick links to create a harness. Install a quick link in the centre of the span of the chain. You will be able to reach this harness from the raft when it is in the water. When the raft is in the water, the anchor line will be connected to the centre quick link as shown in the picture below.
You will need a 1/2" braided nylon rope or 3/8" galvanized or stainless steel chain, (longer than the distance to reach lake bottom) as an anchor line. One end of the anchor line will be connected to a 155 lb dock anchor using a stainless steel quick link. If your lake is particularly windy or wavy you may want to add additional weight.
When you are ready to put the raft in the water, put the anchor with anchor line on the raft (use cardboard, wood or some other material to protect the raft surface) and float the raft into position. Hold the end of the anchor line and push the anchor over the side. Connect the anchor line to the quick link on the harness. Leave at least 1 - 2 feet of slack to allow for waves. Adjust the anchor into it's final position, flat on the bottom. When first installed, the anchor is reasonably easy to move as it still contains air.
When anchoring on lakes with heavy wave action, a heavy bungee section such as what is supplied in the anchor connector kit should be used to help absorb shock.
Prior to the winter, detach the raft and attach a float. (a boat fender will work well) to the anchor line. This will allow you to readily find your anchor point in the spring.
The raft should be cleaned, drained and stored on shore, completely out of the water. A protective cover provides protection from the elements when the raft is not in use.