i cut all the way down one side of the plug...then you jus open it up and lay the clone in it...you don't knock off the gel or powder when you lay them in it, like if you put them in a hole..and you can take a peek if you want and you don't disturb them at all...i'll put up a pic..DJXXI just finished my first round of cloning using these and I was extremely unimpressed versus Rapid Rooters.
Firstly, I got them totally dry. They had to be rehydrated. I filled the tray with water, pouring it over the cubes until it was full. The cubes floated. I had to push them down into the water but then they'd just float back up. I allowed it to soak for 24 hours and the tops of about 1/2 the plugs were still dry as a bone (aka, poor wicking).
Secondly, the holes I found them to have were too shallow. I had to go through every cube with my scalpel so that my stems would be in contact with the material. This was time consuming.
Thirdly, I allowed a little water to remain in the bottom of the tray. This was a terrible idea. Due to the poor wicking the bottom of the plugs stayed completely saturated. This rotted out several clones, while other still managed to root higher up on the stem. I cannot leave water in the tray, but I would also have to pour water over them almost daily to prevent them from becoming uneven in their moisture.
The plants that did root, rooted well with extremely healthy looking new shoots. After 1 try with these plugs I learned a few things and would definitely approach them differently. While I think the product itself is not bad, it is my opinion that the rapid rooters are still a superior product.