If you are just using it on weekends and leave it in the davits make sure they are secure and that the drain plug is open (rain water by the gallon is very heavy). My wife sewed a custom cover (you can by them) with slits we put over ours on the davits with a beach ball from the dollar store underit to give it some slope so the rain sloughs off. For our most of the summer weekend cruising we leave the engine on the dinghy
For trips we susually go from the Chesapeake to NE ebery yeat) we lift it off and put it on the stern rail on a block. Oour Gargauer radar
pole on the stern has a 2 pin detachable engine hoists ( 6:1) which came with it and we put a bridal on the engine and just lift it off ( 5 minutes).
Make sure you have a good bar lock on the engi8ne when on the dingy as well as a good cable keeping it attached to the dinghy
in case of accident. Even though a determined theif will still fins a waty to steal the engine, it easier to find a dinghy
with one not locked. Also buy a long 30 ft cable you can lock when you take you dinghy
into a town, dock etc. It seems to have become an epidemic anmongst teeneages to steal them
You have a nice set up with a 9.9 hp. 4 strokes require good gas to dont let it get to old and get a good additive so it doesnt build varnish
in the pin hole injectors.
have fun...we enjoy having ours on davits immensely which means we use it all the time as it only requires 5 minutes to lauch.