On Friday, July 21, 2000 8:30 PM, Carol Reid wrote:

> On a recent trip to LA, I discovered that nearly all the divers on a boat
to
> Catalina were using Scubapro Graphite Twin jet fins.

> I used them last Sunday and was absolutely delighted at the change in
> *feeling* of each fin action.   It felt very soft and gentle and easy -
I'd
> almost say too easy!

> Have any of you guys or gals tried them out?

G' Day, Carol!  :-)

The question of Twin-Jets came up a few months ago on Scuba-L.

Like you, I tried the heavy duty rubber Twin-Jets and following are some
comments compiled from a couple of posts that I made at the time:-

I'd previously tried the Bio Fins and didn't particularly care
for them.  (Apart from the feeling that I wasn't actually wearing fins, I
discovered that I had to modify my kicking habits to get any sort of thrust
out of them.)  The Twin Jets, however, appeared to be quite different.

I'm one of those people who also employs a variety of different kicks.
Apart from the straight-leg kick, I like to vary the technique depending on
the conditions and whatever it is that I happen to be doing.  Sometimes I
just use an ankle kick; sometimes a dolphin kick; and on other occasions a
frog-kick.  When using the Bio-Fins, I found personal difficulty in being
able to vary the technique.

However, when using the Twin-Jets, I found that they lent themselves to my
full range of kicking styles.  The split fin design of the lower part of the
blade may be identical to that of the Bio-Fin, but the upper part still
retains the appearance of the conventional Jet Fin and this may account for
the difference that I noticed in comparing the performance of the two.

Also the
blade - from memory - appeared to be more rigid than the Biofins.  But I
noticed the real difference between the pair whilst finning.  The Twin Jets
worked very well without any need to modify or change my kicking technique.

Although I can't answer the question as to how effective they'd be in a
current, they certainly seemed to generate more thrust in still conditions
than any other fin that I can immediately recall.  In fact, I didn't even
test out their full potential in terms of speed for fear that I'd leave my
buddy floundering in my wake!  :-)

The one complaint that I did have concerned the foot pocket.  The lower sole
extended back further towards the heel than most other fins that I can
recall.  This meant taking a little more time to put  them on as the strap
sometimes interfered with the extension.

People who use and prefer a heavier and more rigid bladed fin - like the Jet
Fin - would probably take a hell of a lot of convincing before switching to
any other type of fin.  But of all of the new fin designs that have come
onto the market in the past few years, the Twin Jets certainly outshine most
other models that I've seen and used.

Strike