Never did attempted plane spotting anywhere along East Coast Park (ECP) before so I'm afraid someone else with the experience will be able to provide you with a definitive answer.
Generally speaking though, as with Changi Business Park (CBP), favourable aviation photography opportunities from a south-eastern location such as East Coast Park (ECP) exist only between October to March when RWY 02L and RWY 02C are used for arrivals due to the prevailing north-east monsoon seasonal winds.
I doubt so as the Chaff and Flare Dispensers (CFD), located beneath the VHF/UHF antenna, are obscured by the starboard launch rail (station 9) mounted Captive Air Training Missile/Dummy Air Training Missile (CATM/DATM)* or Assembly Monitoring Device/Acceleration Monitoring Device (AMA/AMD)* pod at the wing-tip.
* Unsure what it is actually though supposedly they can be identified by the colour coded bands around them. :sweat: