Soldering instead of crimping

I installed all the wiring my race car and used both crimp and solder. I had rain on the connections while trailering on the road along with massive vibration on the connections. For small wiring I used crimp only but always used shrink sleeve and supported the connection with two inches. On larger connections I crimped and soldered then used shrink sleeve and supported within two inches. 14 years on the car and never had an electrical issue. It takes more time to shrink sleeve each connection but that seals out moisture and adds some support to the joint. I have also used paint on electrical goo which turns solid in the open air. it works but I don't believe it holds up as well as shrink sleeve. I soldered on the larger connections as I was worried about losing some electrical transfer but I never actually saw any need for it.