diff --git a/frappyman.py b/frappyman.py
index f873314..6d35c75 100644
--- a/frappyman.py
+++ b/frappyman.py
@@ -106,7 +106,7 @@ class FrappyManager(ServiceManager):
             raise UsageError('need service to start (one of %s)' % ', '.join(self.services))
         if cfg.startswith('~'):
             cfg = cfg[1:]
-            seacfg = SeaManager().guess_frappy_cfg(ins).get(service)
+            seacfg = self.cfg_from_sea(ins).get(service)
             if seacfg:
                 cfg = seacfg
             if not cfg:
@@ -237,3 +237,22 @@ class FrappyManager(ServiceManager):
                     cfg in self.all_cfg(argdict.get('ins'), argdict.get('service'))):
                 return super().treat_args(argdict, (), unknown)
         return super().treat_args(argdict, unknown, extra)
+
+    def cfg_from_sea(self, ins):
+        sea = SeaManager()
+        sea.get_info()
+        cfgs = sea.get_cfg(ins, 'sea').split('/')
+        result = {}
+        if cfgs[0] and cfgs[0] in self.all_cfg(ins, 'main'):
+            result['main'] = cfgs[0]
+        allsticks = self.all_cfg(ins, 'stick')
+        stick = cfgs[:2][-1]
+        if stick:
+            for s in (stick + 'stick', stick):
+                if s in allsticks:
+                    result['stick'] = s
+                    break
+        addons = [a for a in cfgs[2:] if a in self.all_cfg(ins, 'addons')]
+        if addons:
+            result['addons'] = ','.join(addons)
+        return result
diff --git a/seaman.py b/seaman.py
index b060000..34a06d1 100644
--- a/seaman.py
+++ b/seaman.py
@@ -174,21 +174,3 @@ class SeaManager(ServiceManager):
                 else:
                     raise UsageError('unknown argument: %s' % arg)
         return [argdict.pop('ins', '')] + extra
-
-    def guess_frappy_cfg(self, ins):
-        self.get_info()
-        cfgs = self.get_cfg(ins, 'sea').split('/')
-        result = {}
-        if cfgs[0] and cfgs[0] in self.all_cfg(ins, 'main'):
-            result['main'] = cfgs[0]
-        allsticks = self.all_cfg(ins, 'stick')
-        stick = cfgs[:2][-1]
-        if stick:
-            for s in (stick + 'stick', stick):
-                if s in allsticks:
-                    result['stick'] = s
-                    break
-        addons = [a for a in cfgs[2:] if a in self.all_cfg(ins, 'addons')]
-        if addons:
-            result['addons'] = ','.join(addons)
-        return result