Fw floorseal

I am coating a buffet i have made and am finishing the top
I have used Feast Watson floorseal on the whole cabinet and quite happy with the results.
on the top i now have 2 coats on and the finish is a little streaky is this normal?
will more coats hide this?
I have just been applying using a rag is there a better way?
By doing some research on the forum i have noticed that alot of people use floorseal and then use a polish over the top is this recomended what are the advatages to doing this and how do you go about it?

Thanks Matt

Could I also ask for some advice. I have a couple or NZ Rimu sofa's my Dad made in the 80's that I have restored and I have put several coats of refined Linseed oil on to darken the timber as Rimu fades badly with light. I would like a harder finish on top of the linseed oil if possible and was wondering about using floorseal. Any advice before I do anything silly would be welcome.

Thanks