[flyingfrizzle]

I was thinking about 1 1/2" but I know the 2" drains that were on the 27 drained out fast and I never had anything stop them up either. I was looking at some glass tube on ebay and may try to glass the whole span with one long tube so that I can get away from the hose and connections. Seems like it is only 18-20" to get out the back from the inside liner. I may test this on the 25 first and see how solid tubes work out as that hull will defiantly get drains as it will see some offshore use.