These are some good values I've found to simulate OTA lasers, only, of course, prettier

LLT
beamlaser=1;
thickness=1.25;
corethickness=0.65;
laserflaresize=10;
targetMoveError=0.1;
beamtime=0.12;
rgbcolor=1 0.2 0.2;
tolerance=10000;
explosiongenerator=custom:FLASH1red;
heavy laser tower
beamlaser=1;
thickness=1.5;
corethickness=0.75;
laserflaresize=10;
targetMoveError=0.2;
beamtime=0.15;
rgbcolor=0.2 1 0.2;
tolerance=10000;
explosiongenerator=custom:FLASH1green;
weak yellow laser
beamlaser=1;
thickness=0.75;
corethickness=0.4;
laserflaresize=5;
targetMoveError=0.2;
beamtime=0.1;
rgbcolor=1 1 0.4;
tolerance=10000;
explosiongenerator=custom:FLASH1yellow;
battleship
beamlaser=1;
thickness=2;
corethickness=0.9;
laserflaresize=15;
targetMoveError=0.2;
beamtime=0.2;
rgbcolor=0.2 1 0.2;
tolerance=10000;
explosiongenerator=custom:FLASH1green;
[FLASH1red]
{
usedefaultexplosions=0;
[groundflash]
{
flashSize = 9;
flashAlpha = 0.9;
circleGrowth = 1;
circleAlpha = 1;
ttl = 3;
color = 1,0.8,0.7;
}
}
[FLASH1green]
{
usedefaultexplosions=0;
[groundflash]
{
flashSize = 11;
flashAlpha = 1.1;
circleGrowth = 1;
circleAlpha = 1;
ttl = 3;
color = 0.7,1,0.7;
}
}
[FLASH1blue]
{
usedefaultexplosions=0;
[groundflash]
{
flashSize = 7;
flashAlpha = 1.3;
circleGrowth = 1;
circleAlpha = 1;
ttl = 3;
color = 0.7,0.7,1;
}
}
[FLASH1yellow]
{
usedefaultexplosions=0;
[groundflash]
{
flashSize = 7;
flashAlpha = 1.3;
circleGrowth = 1;
circleAlpha = 1;
ttl = 3;
color = 1,1,0.6;
}
Your result will look something like this:
