I can finally say, after literally hundreds of unsuccessful attempts, I am now able to pass this level in 3 tries or less.
My first breakthrough on this level is when I took the time to catch ALL power-ups symbols. This helped tremendously. My next step forward was to continually watch the scarab’s next color indicator. This not only helps to rapidly position the scarab for the next shot, but also helps to know when to switch the ball for an easier more available shot. Continually watching the scarab’s next color indicator took practice, but it definitely paid off. Also, unlike other levels, you may have noticed that the scarab stops providing the right color ball when the chain is approaching the pyramid, so I had to use a different strategy just for the pyramid row. Lastly, I am convinced that it is more difficult to recover from a misplaced ball, than it is to wait for a good shot.
The strategy below is what I generally use, but there are many occasions when I stray from my own guideline to pick off obviously easy shots.
First Chain:
When the first chain comes out of the shoot, they will be going fast, so unless there is an easy shot (like 3 or more of the same color in a row) wait for the chain to slow down.
Go for the easy shots first. For instance, if you have 2 choices where to place a blue ball, always pick the one that has the most colors in a row. Watch the scarab’s next color indicator so that you can rapidly position the scarab for the next ball. Catch as many power ups as possible. Forget about the coins and gems… they are not worth the effort. When the front-end of the chain rounds the second curve and is rolling down vertically, keep shooting at the horizontal balls, even if you can match the vertical leading ball. Do not go for the vertical balls until the horizontal balls are out of shooting range. When shooting vertical balls, watch the next color indicator and switch colors as necessary so that you can shoot the closest ball first.
Second Chain:
The second chain will be released when all the balls have passed the vertical position. Start shooting the second chain when it slows down (regardless of how many balls are remaining from the first chain). If there are a lot remaining from the first chain, you may have to position the scarab towards the left side of the screen to shoot at the second chain as they are rounding the curve. When I place the scarab in that spot, I notice that the scarab will typically supply me with the right color ball to repeatedly hit the second chain. When the scarab gives an odd color, I immediately look for an opportunity to shot at the first chain. Then immediately go back to shooting the second chain again. Do not worry too much about the first chain until it reaches the pyramid row.
Pyramid Row:
It is best to clear out anything on the pyramid row before the leading ball is halfway down the row. Otherwise it is very unlikely that scarab will give you the correct color ball. Watch the next color indicator and switch colors if necessary to eliminate these balls on the pyramid row. Once the balls have passed the halfway point on the pyramid row, either match the leading ball, or shoot at two or more like colors on the pyramid row. The only exception is when the scarab ball and next scarab ball are the same color. If none of those colors are available, then shoot at the longest color sequence on any row within shooting range.
Row Priority:
When the balls get out of control and start filling up all the rows, the first priority is to match the leading ball on the pyramid row first. If that color is not available, then go for the top horizontal row as they round the curve because you might get lucky and score a lightning bolt or reverse. If that color is not available, the go for the longest color sequence anywhere within shooting range.