Notice that the scraper blade is curved; it quickly wears to match the average curve of the hull, making the scraping action both more efficient and more gentle on the paint.
I do end up scrubbing 2-3 times before I consider paint spent. You need a scraper that...
- gives leverage for hard growth and enough handle for 2 hands. I have sore hands.
- is soft enough not the remove paint.
Of course, use the scraper as little as possible. Try to clean before there is hard growth. Even then, use an easy hand, and only where you must.
The best pads for removing soft growth are...
- easy to hold.
- have enough loops to pull off small barnacles.
- don't remove soft paint.
- 5 inches square seems a good compromise of coverage vs. scrubbing pressure. The one in the picture is smaller, which can be better when some of the growth is hard.
- floats, at least for a while.
And they are free (I have cut-offs from our rec-room carpet installation)!
rev. 6-10-2013. Yup, the Micron CSC was less effective than the Micron 66. Some hard growth starting at 20 months, though not too bad. But more than Micron 66. Switched to West Marine PCA Gold (great price on sale).
rev. 8-31-2015. To my surprise, the West Marine PCA Gold is performing just as well as the Micron 66, and for 1/2 the price, and better than Micron Extra. I'm going to try tho stretch it to 2 1/2 years and do it in the spring. It is basically gone now, but it's always good to wear off more paint and the growth will slow when the water cools.