<?xml version="1.0" encoding="UTF-8"?>
<!-- Created by FilePoint's XBRLinator v.2.1 * www.edgarfilepoint.com * -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:profit="http://profit/20130201" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:us-types="http://xbrl.us/us-types/2009-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:rr="http://xbrl.sec.gov/rr/2012-01-31" xmlns:dei="http://xbrl.sec.gov/dei/2012-01-31" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:xlink="http://www.w3.org/1999/xlink" targetNamespace="http://profit/20130201" elementFormDefault="qualified">
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          <link:linkbaseRef xlink:type="simple" xlink:href="profit-20130201_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/>
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  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://xbrl.us/us-types/2009-01-31" schemaLocation="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-types-2009-01-31.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/rr-ent/2012-01-31" schemaLocation="http://xbrl.sec.gov/rr/2012/rr-ent-2012-01-31.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/rr/2012-01-31" schemaLocation="http://xbrl.sec.gov/rr/2012/rr-2012-01-31.xsd"/>
  <xs:element name="S000001547Member" id="profit_S000001547Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="C000004201Member" id="profit_C000004201Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xs:element name="snp500Member" id="profit_snp500Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
</xs:schema>