teak/holly sole

[dmcmd]

Went through the same process last year.  I never found 3/8" sole.
Decided to go with the 1/4".   It is easier to work with and lighter.  I experimented with 1/2" plywood but stood too proud in several locations.
   Agree with fitting before finishing.  Minor adjustments were need.  I used "Ultimate Sole"  High Gloss Finish I found at a boatshow (www.ultimatesole.com).  It is non skid and gives a beautiful finish.  Don't neglect the bottom sides.  The results were fantastic.  After one year they still look like new and will not need additional coats this year.  
    Only drawback is I need to vacum regularly as any dust and dirt now shows up.