all Sierra-patchable disks have a DOS 3.3 shaped bootloader

src/passport.a

@@ -94,7 +94,7 @@ flag     =     $FF        ; byte
 }
 
 ; Application constants (not zero addresses)
-RELBASE  =     $6300      ; address to move Passport code
+RELBASE  =     $6200      ; address to move Passport code
                           ; so that it's out of the way
 LOWPOINT =     $4300      ; lowest available address for code
 BASEPAGE =     $10        ; Special Delivery tracer assumes
@@ -711,7 +711,7 @@ _applyToAll
          !source "patchers/rwtsswapmecc.a"      ; gIsMECCFastloader only
          !source "patchers/protecteddos.a"      ; gIsProtDOS only
          !source "patchers/fbff.a"
-         !source "patchers/sierra.a"
+         !source "patchers/sierra.a"            ; gIsBoot0 only
          !source "patchers/corrupter.a"         ; T13 only
          !source "patchers/ea.a"                ; gIsEA only (+gIsBoot0 for DOS titles)
          !source "patchers/gamco.a"             ; gIsEEEF only

src/patchers/sierra.a

@@ -4,7 +4,19 @@
 ; protection check used on many Sierra
 ; disks in a way that doesn't trip the
 ; tamper check that checksums the code
-; e.g. Sammy Lightfoot, Crossfire
+;
+; Apple Cider Spider
+; Aquatron
+; BC's Quest For Tires
+; Cannonball Blitz
+; Crossfire
+; Dragon's Keep
+; Learning with Leeper
+; Marauder
+; Mr. Cool
+; Oil's Well
+; Sammy Lightfoot
+; Sierra Championship Boxing
 ;
 ; module by qkumba
 ;-------------------------------
@@ -138,7 +150,10 @@
          jmp   .exit
 
 .dosearch
-         ldy   #15
+         lda   gIsBoot0
+         beq   +
+         jmp   .exit
++        ldy   #15
          jsr   SearchTrack
          !byte $CE,WILDCARD,WILDCARD,$EF,WILDCARD,WILDCARD,$AD
          !byte WILDCARD,WILDCARD,$49,WILDCARD,$D0,01,$20,$8D

src/strings/en.a

@@ -208,7 +208,7 @@ StringTable
 ; can be set directly before calling PrintByID.
 ;
 .header
-         !text "Passport by 4am               2017-05-04",00
+         !text "Passport by 4am               2017-05-05",00
 .mainmenu
          !text "________________________________________",$8D,$8D,$8D,$8D,$8D,$8D,$8D
          !text "              "