If you're pretty good, you could 2 ball it to 3b or 4b. Otherwise, send blue to a tice on the W boundary, with red as tice on the E boundary from b baulk. It will be tricky for black to move both red and blue from their tice postions. Was it wise to put red in C1?
Red could roquet Blue. Then roll Blue north-west of hoop 1 while getting in position to run the hoop. If Red fails to get good position then roquet it out the east border to a tice position from B-baulk. If Red runs hoop 1 then rush Blue out on the west border to a tice position from A-baulk and as before send Red out the east border to a tice position from B-baulk. If Black shoots diagonally at either ball he risks leaving you a double target to shoot at with Yellow in the fourth turn. If Black shoots from the first or third corner down the line at either ball, and misses, then you can manoeuvre to set a strong leave. With the Red clip on hoop 2 and Yellow on hoop 1 you might try to place the opponent's balls at each of your hoops and set the Red and Yellow balls parallel to the east boundary and slightly in from the yardline, so that you are threatening to make at least a 3-ball break with either ball.
Otherwise, send blue to a tice on the W boundary, with red as tice on the E boundary from b baulk. It will be tricky for black to move both red and blue from their tice postions.
Was it wise to put red in C1?