The Warrior/Archer can IMHO be quite heavy on the elevators in the round-out/flare, particularly with only a front-seater. This can result in the pullback required to round and and flare being perhaps greater than ideal and possibly sometimes making it a little difficult to do smoothly. I usually wind on a bit of nose-up trim on fairly short final - with a bit of practice its quite possible to transition from in-trim to slight nose up trim without upsetting the final approach gradient - and then rather than pulling back the round out/flare can become slightly more a case of reducing forward pressure.
I will admit that this practice was offered to me by one long-time instructor some years ago, but has also been frowned on by others I've encountered during checkouts, etc. who say once trimmed for final the trim should be left alone.
WARNING - if you try this, DO NOT let go of the column and do it gently. I would recommend practicing at altitude rather than trying it a few hundred feet off the ground and suddenly finding the aircraft pitching up at low power!