diff --git a/Assets/Src/PowerUnit.cs b/Assets/Src/PowerUnit.cs
index 4423ee7..6fa1dbf 100644
--- a/Assets/Src/PowerUnit.cs
+++ b/Assets/Src/PowerUnit.cs
@@ -32,14 +32,16 @@ public class PowerUnit {
     static float initialShieldMax = 5000f;
     float shieldCurrent = initialShieldMax;
     float shieldMax     = initialShieldMax;
-    float shieldRegen   = 10f; // * 100 ticks per second = 5s fully recharge
+    static float shieldBoostIncrease = 1000f;
+    static float shieldBoostAmount = 1000f;
 
     public float Shield => shieldCurrent;
-    public float ShieldMax => shieldMax;
     public string ShieldPct => $"{((shieldCurrent / shieldMax) * 100f):0}";
-    float ShieldRegen => BoostActive.Count switch {
-        0 => (shieldMax / 5f) * Time.fixedDeltaTime,
-        _ => 0f,
+
+    bool  UsingMovementBoost => BoostActive.Any(b => b.output != Output.Shield);
+    float ShieldRegen => UsingMovementBoost switch {
+        false => (shieldMax / 5f) * Time.fixedDeltaTime,
+        true => 0f,
     };
 
     // Boost
@@ -80,6 +82,8 @@ public class PowerUnit {
         if (boostAvailable < boostDurationSeconds) return;
         BoostActive.Add((output, Time.timeAsDouble + boostDurationSeconds));
         boostAvailable -= boostDurationSeconds;
+
+        if (output == Output.Shield) ShieldsBoost();
     }
 
     public void Tick() {
@@ -104,7 +108,7 @@ public class PowerUnit {
         boostProgress = Math.Max(0f, next);
         if (delta > 0f) boostAvailable = boostProgress;
 
-        shieldMax = initialShieldMax + BoostActive.Count(b => b.output == Output.Shield) * 1000f;
+        ShieldsSetMax();
         shieldCurrent = Math.Min(shieldCurrent + ShieldRegen, shieldMax);
     }
 
@@ -113,4 +117,13 @@ public class PowerUnit {
         shieldCurrent = shieldCurrent - amt;
         return shieldCurrent < 0f;
     }
+
+    void ShieldsBoost() {
+        ShieldsSetMax();
+        shieldCurrent = Math.Min(shieldCurrent + shieldBoostIncrease, shieldMax);
+    }
+
+    void ShieldsSetMax() {
+        shieldMax = initialShieldMax + BoostActive.Count(b => b.output == Output.Shield) * shieldBoostAmount;
+    }
 }
\ No newline at end of file
diff --git a/ProjectSettings/ProjectSettings.asset b/ProjectSettings/ProjectSettings.asset
index 77e4ef3..dcbe2de 100644
--- a/ProjectSettings/ProjectSettings.asset
+++ b/ProjectSettings/ProjectSettings.asset
@@ -134,7 +134,8 @@ PlayerSettings:
   vulkanEnableCommandBufferRecycling: 1
   loadStoreDebugModeEnabled: 0
   bundleVersion: 0.1
-  preloadedAssets: []
+  preloadedAssets:
+  - {fileID: 11400000, guid: 020903acd8b50dd45a683fb9312ba7af, type: 2}
   metroInputSource: 0
   wsaTransparentSwapchain: 0
   m_HolographicPauseOnTrackingLoss: 1
diff --git a/TODO.md b/TODO.md
index 6d51c33..fc68363 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,13 +1,15 @@
 # SpaceRace!
 
-- controls diagram
+- post times to server
+    - in theory yes
+    - rename completions to laps with migration
 
-- shield regen bug
+- controls diagram
+    - mouse / controller sens
+    - invert y
 
 - git lfs
 
-- post times to server
-
 - models
     - liquidator
     - cruise craft racing