You can try these ones made by Areomarine (I think).
There are also some that use an O-Ring - I'll try and get a photo of it
later (if I wander out to my garage).
My next build I am trying some cowl locks using rare earth magnets. I
only ordered them today in-fact.
+-------------------------------------------------------------------+
I have seen something as simple as a cowl that locks underneath a small
lip on one end and a captive nut in the other end with a screw to hold
it down. Use that in conjunction with some sealing strip and you have
yourself a decent seal that won't take your nice paintjob off.
In FE boats, we generally use hockey tape which is available at
www.offshoreelectrics.com
Hockey tape completely seals your hull from leakage in the event of a
blowover etc, however if you are powering with a nitro or gas motor,
that might be a little difficult. You can buy a product called Prather
tape as well, aka hatch tape.

Signature
deestingray
BCRandy - 16 Jan 2008 11:37 GMT
So far, I've used 1/8" closed cell wx strip tape for sealing
the hatch and a stud/knurled knob combination at each end to
hold it down. Home Depot sells #6 studs that have wood
threads on one end and machine screw threads on the other.
They also sell the knurled knobs I use to screw onto the
machine threaded side (I think they are sold as replacements
for light fixtures). This isn't the slickest or lightest
solution, but it's secure, water tight, cheap, and easy.
Randy
"deestingray"
> I have seen something as simple as a cowl that locks
> underneath a small
[quoted text clipped - 14 lines]
> called Prather
> tape as well, aka hatch tape.