I need information on how to make Boat Launch Ramps non slip to allow
users to pull their boats out, without thier cars/trucks slipping &
spinning out.

There are two main ways to improve traction on a wet surface. Get rid
of the moisture and add bumps.

Adding traction grooves to your launch would help channel moisture
away from the contact surface, keeping it drier. A good picture of a

grooved launch can be seen here, at this Australian boat launch
construction company's website.
http://www.seaconstruction.com.au/products/boatramps.php

There are coatings available specifically for improving traction under
slippery conditions.

Cornerstone Coatings International, Inc. (
http://www.cornerstonecoatings.com/ )
Box 479
Bruno, Saskatchewan
CANADA, S0K 0S0 
Phone (306) 369-2521 Fax (306) 369-2656
info@cornerstonecoatings.com

"Safe-T-Grip Traction Coating is packaged in a KIT that contains
everything you need to do-it-yourself."
http://www.cornerstonecoatings.com/products.html

Interstate Products, Inc ( http://www.interstateproducts.com/ )
511 Interstate Court
Sarasota, FL  34240
1-800-474-7294 

http://www.interstateproducts.com/nonslipproducts.htm

There are special building materials specifically for your
application.

CertainTeed ( http://www.certainteed.com/ )
Boardwalk(TM) Composite Lumber
For the Boardwalk(tm) Consumer: 800-782-8777
Hours of Operation: Monday through Friday 7:30 AM - 6:30 PM EST 
http://www.certainteed.com/cfence/cfbw00101.html

Examples of use include "...docks, boat slips, piers and marinas"
http://www.certainteed.com/cfence/cfbw00108faq.html

Where to buy CertainTeed products
http://www.certainteed.com/home_frames/wtb_frmst.html

If there is anything else I can do in answering your question, please
feel free to ask for a clarification.

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