The Spray tool is going to work best if you want to cover a large area in a random way. It can spray in a line, but I find it hard to do. But if you want to draw a line which has a particular shape, then PAP would be better.
Oh! I forgot about the Scatter extension. Extensions menu > Modify Path > Scatter. Sometimes it's better than PAP, because the pattern doesn't get distorted around curves, like PAP.
It's hard to give you specific suggestions, without more info about your project. But let us know if you have further questions
(I'm not familiar with Corel, but it probably has both vector and raster tools, like Inkscape does.)