The splash coordinates I'm using is the one included in the "Lost 13" add-on, -21.3824 S -165.2142 W (Wikipedia A13 mission page).
Here's the technique for the "lift vector up" scenario:
1. Maintain the attitude that's there at scenario start (bank 45 R, pitch using a combo of the Earth orbit HUD projection and Surface MFD up on the right side. Maintain the pitch on the surface MFD at +27 deg, which is +156 on the HUD projection.
2. Hold this attitude until vertical speed reduced to about -250 m/sec. Then roll right to a full 90 deg of bank. Then use right yaw as pitch (since your rolled full right) to a neutral 180 deg pitch on the HUD. Once there, maintain this attitude until the vertical speed drops to around -60 m/sec.
3. Now yaw right as pitch to pitch -208 on the HUD, which is -27 deg pitch on the Surface MFD.
4. Once there, roll right through maybe 160 deg R roll. (Have the Orbit MFD up on the left side during this.) You are not quite sub-circ yet. Let the vertical speed build up again to around -120/-130 m/sec, then quick roll left back to 90 deg r roll. Then yaw left as pitch back up to the neutral -180 HUD display and keep it there.
5. Once you drop sub-circ. Switch to Map MFD with the "A13 Splash" base as target with orbit track selected. Then yaw left as pitch up to +154 on the HUD, which is +27 deg pitch on the Surface MFD. Once there, put in a left roll a bit to about 80-85 deg on the Surface MFD to help reduce the cross range. Maintain this attitude till velocity drops to about say 5700 m/sec.
6. Once at 5700 m/sec roll left up to wing level, then pitch up to +154 deg on the HUD, or +27 deg on the Surfce MFD. Once there, put in a little right bank maybe say 10 deg R to continue to eat away at the cross range.
7. Now let the vertical speed build up to +120 to +130 m/sec or so, then quickly roll left to 45 deg Left roll (depends on your cross range error, but usually it's left roll) to let the vertical speed start to drop, or you will sail on way past the splashpoint. Range to go is roughly about 450-400 km when you do this.
8. Now always maintain +27 deg pitch as usual on the Surface MFD. (The HUD equivalent will lower for this as it falls through, let it do so, but always maintain the +27 pitch on the Surface MFD.
9. From here on you will get a feel with experience as to how much lift you need to dump so you don't overshoot the target.
10. At 300 km range to go, roll left to a full 90 deg L bank, but always maintain the +27 deg pitch on the Surface MFD. Let the vertical speed build up around or past -250 m/sec at this point, then put the 45 deg Left bank back in and maintain the +27 pitch along with it.
11. You want to be around 3000 m/sec and falling at around 175/150 km range to go.
12. The g's will build back up to like 4g. Once the flames subside, stop trying to control the pitch and let the nose drop back to 180 deg on the HUD. I put in a little right bank angle to keep it from yawing too much. You should have enough RCS fuel left to keep it stable with using killrot now and then till drogue deploy. You should have around 3-5 percent left at this point.
This should get you within about 20 km. Getting even closer depends on how you modulate that final bank angle back at around 3000 m/sec until terminal phase.
