there's more to it than just that. Any hardcore healer will tell you that healing is really a 6th sense when it comes to knowing what and when to heal. Yes paladins dont really have a set spell to buff up (now we do...kinda) or the ability to cast single and multi-target heals but we do have some basic, straight forward GC spells.
Personally I have always loved FoL and with the right set up it is very effective. I usually do 45% FoL, 38% HL, 15% HS, and 2% HoTs. On paper (recount) I am the only holy pally in my guild who does this (there is another now but he varries from time to time) and the results show that my approach is most effective in healing done, HPS, least overhealing, and most mana gained.
Before the nerf I can recall gaining over 60k mana w/o ever using DP and 80k with DP