I was wondering how the numbers get changed to have closed centers and I asked BeeDiana and she said "Solid center is achieved with Dave's tool by entering higher effect numbers than the parameter number. The opposite is using minus numbers and a higher parameter that causes the middle to open". This helped me a lot in achieving what I was looking for. Thanks Diana.

I'll list the steps I've used and hope it gives you an idea as to how to go about this.

Name your sinedot-example: silver.jpg
change the x250 size you want to- example:350x350
I leave the 75
Bg color: use a number like #fefefe - white
Next to: Red: 0xfe
Green: 0xfe
Blue 0xfe
Spiral color: use a silver - #cccccc----
Next: Red: 0xcc
Green: 0xcc
Blue 0xcc
Transparify: 20 is good or 80

(Not too sure what these do so experiment with this number)Effects is where you get the different styles so just play with numbers
Examples:Effect#1: 150
Effect#2: -3
Effect #3: 5
Parameter 250

Using all of above except the last three effect numbers using: Effect#1: 115
Effect #2: 101
Effect#3: 10
Parameter 90

Hope this helps to give you an idea how to use this tool. I don't know anyone that has made a tutorial on how to do these so if there is one I will be sure to delete this tute if notified.
Check out my Imploded Sinedot tute - the red candle one is very similar to the first example I gave above. Thank you. ~~Lee~~