I also have this test class for this form's extension.

@isTest
//This is a test case for a situation where a lead will be converted.  The developer must explicitly call the convert lead
//method to simulate the user action.

private class BillofLadingtest4Extensiontest {

public List<Bill_of_Lading__c> bol {get;set;}

    static testMethod void BillofLadingtest4Extension() {
    
    //test.startTest();
    
    Bill_of_Lading__c b = new Bill_of_Lading__c(Name ='testbilloflading');
    insert b;
    
    List<Skid__c> skids;

    List<Bill_of_Lading__c> bol;
    
    Skid__c sk = new Skid__c(Name ='test', Bill_of_Lading__c = b.Id);
    insert sk;
    update sk;
 
    ApexPages.StandardController con = new ApexPages.StandardController(b);
    BillofLadingtest4Extension bole = new BillofLadingtest4Extension(con);
    PageReference ref = bole.save();
    
//test.stopTest();

}

}

This is a snippet of the extension and I'm only getting 38% coverage.

Not tested

private boolean updateSkids()
 37	      {
 38	          boolean result=true;
 39	          if (null!=skids)
 40	             {
 41	                // TODO: should work out what's changed and then save, easier to update everything for prototype
 42	             List<Skid__c> updSkids=new List<Skid__c>();
 43	                try
 44	                {
 45	                 update skids;
 46	                }
 47	                catch (Exception e)
 48	                {
 49	                   String msg=e.getMessage();
 50	                   integer pos;
 51	                    
 52	                   // if its field validation, this will be added to the messages by default
 53	                   if (-1==(pos=msg.indexOf('FIELD_CUSTOM_VALIDATION_EXCEPTION, ')))
 54	                   {
 55	                      ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.ERROR, msg));
 56	                   }
 57	                    
 58	                   result=false;
 59	                }
 60	             }
 61	              
 62	             return result;
 63	      }

Not tested

 public PageReference saveAndExit()
 66	      {
 67	       boolean result=true;
 68	      result=updateSkids();
 69	        
 70	       if (result)
 71	       {
 72	          // call standard controller save
 73	          return std.save();
 74	       }
 75	       else
 76	       {
 77	        return null;
 78	       }
 79	      }

 Not tested

 public PageReference save()
 82	      { 
 83	       Boolean result=true;
 84	       PageReference pr=Page.Billofladingtest05222013;
 85	       if (null!=getBillofLading().id)
 86	       {
 87	        result=updateSkids();
 88	       }
 89	       else
 90	       {
 91	        pr.setRedirect(true);
 92	       }

 Not tested

 public void newSkid()
 106	      {
 107	         if (updateSkids())
 108	         {
 109	            Skid__c skid=new Skid__c(Name=newSkidName, Dimension__c=newSkidDimension, Number_of_Pieces__c=newSkidNumberofPieces, UOM__c=newskiduom, Weight__c=newskidweight, Bill_of_Lading__c=getBillofLading().id);
 110	            insert skid;
 111	           
 112	            newSkidName=null;
 113	            newSkidDimension=null;
 114	            newSkidNumberofPieces=null;
 115	            newskidbilloflading=null; 
 116	            newskiduom=null;
 117	            newskidweight=null;
 118	            skids=null;
 119	         }
 120	      }
 121	       
 122	      public void deleteSkid()
 123	      {
 124	         if (updateSkids())
 125	         {
 126	            if (null!=chosenskidId)
 127	            {
 128	               Skid__c skid=new Skid__c(Id=chosenskidId);
 129	                delete skid;
 130	          
 131	                skids=null;
 132	                chosenskidId=null;
 133	            }
 134	         }
 135	      }
 136	       
 137	     public List<Skid__c> getSkids()
 138	      {
 139	         if ( (null!=getBillofLading().id) && (skids == null) )
 140	         {
 141	             skids=[SELECT Id, Name, Bill_of_Lading__c,  
 142	                          Dimension__c, Number_of_Pieces__c, UOM__c, Weight__c
 143	                          FROM Skid__c 
 144	                          WHERE Id =: getBillofLading().id
 145	                          ORDER BY CreatedDate];
 146	         }                           
 147	         return skids;
 148	      }
 149	      
 150	      public String getChooserender() {
 151	       if (ApexPages.currentPage().getParameters().get('p') != null)
 152	          return 'pdf';
 153	          else
 154	        return null;
 155	    }
 156	    
 157	     public PageReference deliverAsPDF() {
 158	        PageReference pdf =  Page.Billofladingtest05222013;
 159	          pdf.getParameters().put('p','p');
 160	          return pdf;
 161	    }

 Again, any help on this would be appreciated.