FK260MI22O heatsink with no board slot?

[Faringdon]

Hi,
We wish to use this heatsink, but just clip it over the TO220 FET....ie, not have a slot for the base piece ("blade") . Is that OK?
(Its the NFET of a 48W flyback with 24Vin.)

We dont want the heatsink going through the board, as it would interfere with tracking below.
We wouldnt mind having a little surface mount pad to solder the "blades" to. Is that OK?
But really we just want to clip the heatsink on and no more...would that be OK?

https://www.fischerelektronik.de/web_fischer/en_GB/heatsinks/C02/Attachable%20heatsink/$catalogue/fischerData/PG/FK260MI220O/search.xhtml

[Gyro]

You tell us. You're the only one who knows anything about the operating [and shipping] environment. Either way, stop asking bloody stupid questions.