Resolution of reported speed

(Using basecamp 4.0.4)

Speed (eg in knots) is reported to 1 decimal place to 4.9 knots then goes 5 - 6 -7 etc.
In km/h I think it's the same up to 4.9km/h then 5, 6, 7, etc

It's a shame that Basecamp does not show the same resolution as my GPSr does which is generally 1 decimal place right up to 99.9 knots/kmh/mph.

In my case this level of accuracy is essential as I'm kayaking at around 3-4 knots with tides of about the same amounts, and (hence) above 5 knots I cannot see the effect different courses etc have on my speed, because fractions of a knot are important.

Could we have either a permanent change in Basecamp, or an option to switch to a higher resolution for the speed?